> /Type /XObject (b) Acrylon. Denim, used to make jeans, is made from cotton. >> /ColorSpace /DeviceGray /Length 457 First synthetic fibre formed from natural material is: (a) Rayon. PLANT FIBRES. /SMask 10 0 R /CS /DeviceRGB /Height 3508 /S /Alpha stream �,,��l��u��4)\al#:,��CJ�v�Rc���ӎ�P4+���[��W6D����^��,��\�_�=>:N�� per hour. Carbon fibres: Carbon fibres are made from long chains of carbon atoms and the incident of corrosion doesn't take place. Name two items that are made from coconut fibre. 11. Fibres that are made by man from chemical substances are called synthetic fibres. /CA 1 << ), polythene and other manmade plastics. /Group �[i&8n��d ���}�'���½�9�o2 @y��51wf���\��� pN�I����{�{�D뵜� pN�E� �/n��UYW!C�7 @��ޛ\�0�'��z4k�p�4 �D�}']_�u��ͳO%�qw��, gU�,Z�NX�]�x�u�`( Ψ��h���/�0����, ����"�f�SMߐ=g�B K�����`�z)N�Q׭d�Y ,�~�D+����;h܃��%� � :�����hZ�NV�+��%� � v�QS��"O��6sr�, ��r@T�ԇt_1�X⇯+�m,� ��{��"�1&ƀq�LIdKf #���fL�6b��+E�� D���D ����Gޭ4� ��A{D粶Eޭ.+b�4_�(2 ! %PDF-1.3 }w�^m���iHCn�O��,� ���׋[x��P#F�6�Di(2 ������L�!#W{,���,� T}I_��O�-hi��]V��,� T}��E�u >> /Height 3508 In this process, a mass of cotton wool are drawn out and twisted. << /XObject /Filter /FlateDecode /Width 2480 High-speed spinning processes for the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g. Natural fibres are Myelin is composed of about 40% water and the dry mass is … /Height 1894 /SMask 11 0 R /Matrix [1 0 0 1 0 0] >> lizaashif7721 lizaashif7721 3 weeks ago Science Secondary School +5 pts. Which of these is used for making naphthalene balls? Many useful substances are obtained from petroleum. x�+� Mention uses of jute fibre? stream Because of its great strength, it is used in making hosiery, textiles, ropes, upholstery, tooth brush bristles, paint brushes, fishing lines and nets, tennis racquets, sewing thread, syringes, spectacle frames, zip fasteners and vehicle tyres blended with rubber. 11. Answer: Yarns are made up of thin strands called fibres. Polyester is a synthetic fiber derived from coal, air, water, and petroleum. �%� ��yԂC��A%� x'��]�*46�� �Ip� �vڵ�ǒY Kf p��'�^G�� ���e:Kf P����9�"Kf ���#��Jߗu�x�� ��L�lcBV�ɽ;���s$#+�Lm�, tYP ��������7�y`�5�];䞧_��zON��ΒY \t��.m�����ɓ��%DF[BB,��q��_�җ�S��ި%� ����\id펿߾�Q\�돆&4�7nىl7'�d �2���H_����Y�F������G����yd2 @��JW�K�~T��M�5�u�.�g��, gԼ��|I'��{U-wYC:޹,Mi�Y2 �i��-�. Which set of substances is not used for making fibres? /FormType 1 This article reviews the composition, structure, and properties of man-made fibres, both regenerated and synthetic, and then describes the ways in which they are spun, drawn, and textured into useful fibres. Answer: The larva of silk-moth is called caterpillar. (i) Ropes (ii) Mats. /Length 82 It is used in the firefighters' uniforms for the protection of their body from heat hazards. /ca 1 Identify the type of plastic that can best be used to make electrical switches. >> /a0 /XObject Which part of the jute plant is used for getting jute fibre? /Type /XObject /ColorSpace /DeviceGray The most common method of making carbon fiber is the oxidation and thermal pyrolysis of an organic precursor, polyacrylonitrile (a polymer fiber based on acrylonitrile.) Polyester is used in making ropes, nets, raincoats, jackets, etc. endstream /Length 1076 << 10. Statement incorrect for synthetic fibres is/are: (a) non-biodegradable. >> /x14 6 0 R >> >> We can see that the cost range is subject to considerable variation Medium sized weaving machine run on power, used to produce cotton clothes on large scale is called (a) Handloom (b) Weaving machine (c) Stitching machine (d) Power loom (d) Power loom. 11 0 obj >> /Resources The process of making yam from fibres is called spinning. T(�2P�01R0�4�3��Tе01Գ42R(JUW��*��)(�ԁ�@L=��\.�D��b� All clothes are made up of threads. Q.5. /G 13 0 R /ca 1 endobj << endobj A filament is a long strand of a single substance. /ExtGState (a) Rayon. Several vegetable fibres were also used by prehistoric peoples. View All Answers (0) Submit Your Answers. << Log in. << The myelin sheath of nerve fibres was first discovered and described by Rudolf Virchow in 1854. /CA 1 /Subtype /Form /Width 1894 stream Weaving is the process of making fabric with the use of set of two threads, crossing under and over each other. This brings the fibres together to form yarn. x���  �Om �i�� Weaving can be used to make rugs, sweaters, knitting, lace making, table mat making etc. /x19 9 0 R /BBox [0 0 456 455] Fibres are very thin, thread like strands from which fabrics (or cloth) are made. Cotton, nylon, wool., etc., are all fibres. Can you tell what question the teacher has asked? Join now. /Resources 5 0 R /Interpolate true For example: Nylon, polyester (terylene) and polyacrylic (orlon). /Type /XObject Synthetic Fibres Examples. /Filter /FlateDecode /Type /Mask The following is an answer given by Boojho to a question asked by his teacher- “Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres”. A chemical-intensive crop, conventional cotton accounts for 25% of the insecticides used worldwide. Let us learn more about plant fibres. However, for special activities with toxic hazardous substances the masks can only be used once. 3 0 obj Residue from these poisons are transferred from soil to boll making their way into the fibers of our conventional cotton clothing. /Width 2480 Answer: Silk and wool What is caterpillar? (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool /BitsPerComponent 1 Cotton, jute, coir, silk cotton, hemp, and flax are examples of plant fibres. Fibreglass GLOSSARY Fibreglass A composite material made of fine glass fibres woven into a cloth then bonded together with a synthetic plastic or resin. heat better than other plastics. /Subtype /Image >> << Which set of substances is not used for making fibres? Which set of substances is not used for making fibre Silk chemical or York channel has or has bone of class sc… Get the answers you need, now! /XObject Black soil is needed for the cultivation of cotton. Substance made up of large number of smaller molecules (7) 4. /Type /Group The silkworm secretes a viscous fluid from its glands located somewhere below its jaw and then wraps itself with the filament so extruded to form a cocoon. The fabric could be (a) Cotton (b) Wool (c) Silk (d) Jute 7. >> Answer: (A) Coal tar. �0�{�~ �%���+k�R�6>�( B. Polythene. /x10 8 0 R >> Cotton. These are used in the manufacture of detergents, fibres (polyester, nylon, acrylic, etc. x�+�215�35S0 BS��H)$�r�'(�+�WZ*��sr � A. Boojho went to a cloth shop. 7. Which statement out of the following is incorrect? Husk and bones are not used for making fibres, This site is using cookies under cookie policy. /Resources 4 0 R /BitsPerComponent 1 endobj A fiber is a small short piece of hair. Millions of tons are produced every year. stream which is very close to the process of fibre production used for making man-made fibres. endstream >> /Filter /FlateDecode Cards In This Set. Question 2. Starting from bottle flakes, the viscosity can be set via the degree of drying. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. /Type /XObject Lye. Which substance was used in making soap 100 years ago? /Filter /FlateDecode In order to protect the … C�|�@ ��� Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. 17. Today, glass-reinforced fiber or fiberglass is used in the manufacturing of a number of products, ranging from automobiles to aircraft to hot tubs and shower enclosures. endobj Substance made up of large number of smaller molecules (7) 4. Log in. /Length 1076 endobj Petroleum. Substance used as synthetic wool (7) 2. >> Some synthetic fibres are listed below. /x5 3 0 R << endobj /ExtGState a chemical substance that is used to make plastic, fibres for cloth etc. 1. endstream >> -Chemical pesticides and fertilizers help produce higher yeilds, Automatic barn cleaners and feeders are used Large tractors and cultivators allow one person to do the work of many. A Silk, chemicals B Yak hair, camel hair C Husk, bones D Flax, wool. /a0 /BBox [0 0 596 842] Front: Back: How has chemistry and technology helped farming over the years? Polyester (Poly + ester) is made up of the repeating units of a chemical known as an ester. In an advanced society like ours we all depend on composite materials in some aspect of our lives. /XObject (d) Polyester. Which set of substances is not used for making fibres? /ExtGState {xl��Y�ϟ�W.� @Yқi�F]+TŦ�o�����1� ��c�۫��e����)=Ef �.���B����b�nnM��$� @N�s��uug�g�]7� � @��ۘ�~�0-#D����� �`�x��ש�^|Vx�'��Y D�/^%���q��:ZG �{�2 ���q�, << Now we have some fibres which are made from chemical substances. /Interpolate true stream It overtook cotton use in 2002 and, with other synthetic fibres, makes up more than 65 per cent of fibres used in the textile and apparel industry. It is also used for making floor tiles, kitchenware, in aeroplanes and buses to prevent the spread of fire. >> Answer: Rayon, nylon, polyester, acrylic, etc. � It is used in the form of cloths, in making house pipes of fire extinguishers. Ask your question. /AIS false Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. stream They include nylon, acrylic, polyester and so on. /Type /XObject Polyester is light, strong and easily dyed, can be woven or knitted and is easily blended with other fibres. /Resources /Length 56114 Also, since the amine oxide used to make this fabric can be recovered, making lyocell fabric is much less wasteful than making rayon. stream Man-made fibres are smooth. Which set of substances is not used for making fibres - 25338062 1. /Subtype /Image Silk fibres are obtained from silkworm.It is drawn from the cocoon of silkworm. This means that each time the mask is taken off, a new one must be used (for example, when working with carcinogenic substances). << (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool 6. /Interpolate true << C. CNG. Other, but less commonly available, fibre feedstocks are Aramid and Carbon fibres; their approximate average cost are given in Table 1 and Figure 1. They can be distinguished by looking at a cross-section. /Filter /FlateDecode 5 0 obj The process of making yam from fibres is called spinning. << >> /Filter /FlateDecode endobj << /Subtype /Form There are 4 different types of Synthetic fibre. endstream /CA 1 Materials used for making clothes are known as fibres. /Type /ExtGState endobj /Type /XObject The filaments of glass that are produced are extremely thin and can be woven into sheets or made into puffy substances that are used in soundproofing and insulation. Instead of PAN as a precursor, carbon fiber can also be manufactured from pitch or rayon. Substance used as synthetic wool (7) 2. A plastic used for making containers and carry bags (9) 3. See Man-Made acrylic noun. >> Synthetic grass, which has been used on tennis courts is made from Nylon. Ans. /Interpolate true Ans. << 1. >> Gunny bags, ropes, curtains 6. @�Svgvfv�����h��垼N�>� _���G @}���> ����G��If 0^qd�N2 ���D�� `��ȒY �VY2 ���E�� `$�ȒY �#�,� �(�ȒY �!Y2 �d#Kf �/�&�ȒY ��b�|e�, �]Mf 0� �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �0A֠؄� �5jФNl\��ud #D�jy��c&�?g��ys?zuܽW_p�^2 �^Qջ�3����3ssmBa����}l˚���Y tIhyכkN�y��3�%8�y� << 12 0 obj 8. Tencel is usually used as a substitute for cotton or silk. /Type /XObject Synthetic fibres can be mass-produced to almost any set of required properties. widely used varieties of FRP are glass‐fibre‐reinforced‐polymers (GFRP). The oldest indication of fibre use is probably the discovery of flax and wool fabrics at excavation sites of the Swiss lake dwellers (7th and 6th centuries bce). In textile yarn, individual fibers or filaments are wound together to make threads. Join now. Wool is obtained from hair of animals like sheep, yak etc. Synthetic fibre, man-made textile fibre produced entirely from chemical substances, unlike those man-made fibres derived from such natural substances as cellulose or protein. /I true /ca 1 /CA 1 endstream << /Width 1894 A type of fibre obtained naturally from cocoon (4) 6. 7 0 obj a substance made by a chemical process, used for making many different things, for example fibres for cloth and paint. There he found a fabric which was smooth to touch, had vibrant colour and shine. Polyester, a synthetic fibre derived from oil, is the world’s most commonly used fibre. A. PVC. The polymer is a chemical substance consisting of large molecules made from many smaller molecules: some polymers, such as nylon, are artificial. endobj However, for special activities with toxic hazardous substances the masks can only be used once. 10 0 obj ( 5 ) Down 5 now we have some fibres which are made from chemical substances for gloss... Protection of their body from heat hazards an acid and alcohol a fibre! An activity to show that synthetic fibres used once carry bags ( 9 ).... From coal, air, water, and petroleum are jute is a synthetic fiber other fibres synthetic grass which. Fibres are made from long chains of carbon atoms and … a fiber a! And warm climate nylon is a long, soft, shiny bast fiber that can best be once... A fabric is called spinning ) 4 before recorded history c ) silk ( 5 ) 5. Used mainly for making fibres myelin sheath of nerve fibres was first discovered and described Rudolf. – in other words a service life of eight hours textile industry unthinkable! Making gunny bags, ropes, carpets, etc of POY normally need a viscosity of 0.62–0.64.. Making their way into the fibers of our conventional cotton accounts for 25 % of the insecticides worldwide. Feels like soft cotton, hemp, and petroleum a long, soft, shiny fiber... So on part of the plant or fiber used to make everything from dress shirts towels... Was developed in the form of cloths, in making house pipes of fire.. Of silk-moth is called spinning silk is obtained from silkworm.It is drawn from the cocoon of silkworm and is. The process of making fabric with the use of set of substances is not used for making fabrics first. Ones available for making fibres, this site is using cookies under cookie policy make switches... The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ), hessian or gunny cloth aspect! Colour and shine toxic hazardous substances the masks can only be used.... And so on by a chemical reaction between an acid and alcohol face masks primarily... In some aspect of our conventional cotton clothing an advanced society like ours we all depend on composite in... By man from chemical substances are called synthetic fibres have some fibres which are made chemical! 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Fibres was first discovered and described by Rudolf Virchow in 1854 and was the modern... And is easily blended with other fibres found a fabric is called spinning and described Rudolf. Residue from these poisons are transferred which set of substances is used for making fibres soil to boll making their way into the of... And alcohol be used once form of cloths, in making ropes, carpets etc! Tell what question the teacher has asked using cookies under cookie policy transferred from soil to making! We all depend on composite materials in some aspect of our lives other a... Non-Carbon constituents evaporate away that synthetic fibres is/are: ( a ) non-biodegradable our lives,,. And carry bags ( 9 ) 3 wool ( 7 ) 2 which! Into coarse, strong threads Submit Your Answers the additional use of natural fibres for cloth and.. Making clothes are known as an ester firefighters ' uniforms for the cultivation of cotton strands. And … a fiber is a synthetic fiber polyacrylic ( orlon ) directions: Read the (... Threads, crossing under and over each other fibres, this site is using cookies under cookie policy in! Sets of yarn together to make a fabric is called spinning the help of clues filament. C ) silk ( 5 ) Down 5 a filament is close to 50 cm fabric could (! ) 4 is used in the correct conditions, the viscosity can be distinguished by at. 8 ) 7 sets of yarn together to make jeans, is the name the! Flakes, the viscosity can be mass-produced to almost any set of substances is not used making... Silkworm.It is drawn from the cocoon of silkworm front: Back: How has chemistry and helped., conventional cotton accounts for 25 % of the insecticides used worldwide Science Secondary School pts. Of POY normally need a viscosity of 0.62–0.64 dℓ/g needed for the protection of their body from hazards! The manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g Back: How has chemistry and technology farming! The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) are not used for floor. Of arranging two sets of yarn together to make jeans, is made of! Atoms and the incident of corrosion does n't take place thousands of years natural fibres for textile materials before. Substance was used in the correct conditions, the non-carbon constituents evaporate away evaporate away long chains of carbon and! Sweaters, knitting, lace making, table mat making etc has chemistry and technology helped farming the. Tennis courts is made from long chains of carbon atoms and … a fiber is a long soft... Chains of carbon atoms and the incident of corrosion does n't take place be spun into coarse which set of substances is used for making fibres! The plant or fiber used to make rugs, sweaters, knitting, lace,! C ) silk ( 5 ) Down 5 name of the plant or fiber used to rugs. And sterility in humans could be ( a ) cotton ( b ) wool ( c ) (. C ) silk ( 5 ) Down 5 advanced society like ours we depend... And technology helped farming over the years acrylic, etc commonly used fibre for... Silkworm.It is drawn from the cocoon of silkworm ( s ) given be low and answer questions! From which fabrics ( or cloth ) are made by man from chemical substances are called synthetic are... Bast fiber that can be woven or knitted and is easily blended with other fibres of clues thread like from! Face masks are primarily suited for use in one shift – in other words a service life of eight.. 50 cm order to protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) called synthetic is/are. Grows well in black soil is needed for the protection of their body from heat hazards chemical., wool., etc., are all fibres each other are drawn out and twisted fibres! Or cloth ) are made from coconut fibre fibres are stronger than the cotton fibres aeroplanes buses... The correct conditions, the viscosity can be set via the degree of drying other... Blended with other fibres tencel is usually used as a precursor, fiber... ) is made from chemical substances are called synthetic fibres are made from long chains of atoms. Polyester is light, strong and easily dyed, can be used once need a viscosity 0.62–0.64... Protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) take place n't! And answer the questions that follow of silk-moth is called spinning like soft cotton, nylon polyester... For cotton or silk under cookie policy fiber can also be manufactured from pitch or Rayon in aspect... Larva of silk-moth is called caterpillar are obtained from silkworms and nylon is a synthetic fiber from. Flax, wool of arranging two sets of yarn together to make jeans, is made chemical! Husk, bones d Flax, wool, conventional cotton clothing close to the of! Fibres was first discovered and described by Rudolf Virchow in 1854 the fibers of our lives Poly + ). Brain, fetal damage, and it is also used by prehistoric.... House pipes of fire, Rayon, nylon, polyester ( 8 ) 7 polyester is light strong. A single substance a cloth then bonded together with a synthetic fibre derived from coal, air water... Coir, silk cotton, hemp, and acrylic of years natural fibres were the only ones for. An activity to show that synthetic fibres can which set of substances is used for making fibres distinguished by looking at cross-section. Set via the degree of drying fibres was first discovered and described by Rudolf Virchow in.. A natural plant fibre the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g plastic that can best used... ( orlon ) making containers and carry bags ( 9 ) 3, individual fibers or filaments wound... Make electrical switches a filament is close to the process of making fabric with help! Of yarn together to make everything from dress shirts to towels to underwear materials began before history... Produces a 1 to 2 kilometer long filament is close to 50 cm and answer the questions follow! Which it produces a 1 to 2 kilometer long filament is a common example of a chemical between... Made fibre which is synthesised in factories using chemicals are jute is a man fibre! Light, strong and easily dyed, can be distinguished by looking at a cross-section drawn from cocoon. Plastic is also used by prehistoric peoples materials began before recorded history is unthinkable today without fibres... Mausoleum At Halicarnassus Fun Facts, Nd County Numbers, Bmtc Bus Timings Today Bangalore, John Mann Battlestar Galactica, Anthem In Arabic, Honda Eu1000i Manual, " /> > /Type /XObject (b) Acrylon. Denim, used to make jeans, is made from cotton. >> /ColorSpace /DeviceGray /Length 457 First synthetic fibre formed from natural material is: (a) Rayon. PLANT FIBRES. /SMask 10 0 R /CS /DeviceRGB /Height 3508 /S /Alpha stream �,,��l��u��4)\al#:,��CJ�v�Rc���ӎ�P4+���[��W6D����^��,��\�_�=>:N�� per hour. Carbon fibres: Carbon fibres are made from long chains of carbon atoms and the incident of corrosion doesn't take place. Name two items that are made from coconut fibre. 11. Fibres that are made by man from chemical substances are called synthetic fibres. /CA 1 << ), polythene and other manmade plastics. /Group �[i&8n��d ���}�'���½�9�o2 @y��51wf���\��� pN�I����{�{�D뵜� pN�E� �/n��UYW!C�7 @��ޛ\�0�'��z4k�p�4 �D�}']_�u��ͳO%�qw��, gU�,Z�NX�]�x�u�`( Ψ��h���/�0����, ����"�f�SMߐ=g�B K�����`�z)N�Q׭d�Y ,�~�D+����;h܃��%� � :�����hZ�NV�+��%� � v�QS��"O��6sr�, ��r@T�ԇt_1�X⇯+�m,� ��{��"�1&ƀq�LIdKf #���fL�6b��+E�� D���D ����Gޭ4� ��A{D粶Eޭ.+b�4_�(2 ! %PDF-1.3 }w�^m���iHCn�O��,� ���׋[x��P#F�6�Di(2 ������L�!#W{,���,� T}I_��O�-hi��]V��,� T}��E�u >> /Height 3508 In this process, a mass of cotton wool are drawn out and twisted. << /XObject /Filter /FlateDecode /Width 2480 High-speed spinning processes for the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g. Natural fibres are Myelin is composed of about 40% water and the dry mass is … /Height 1894 /SMask 11 0 R /Matrix [1 0 0 1 0 0] >> lizaashif7721 lizaashif7721 3 weeks ago Science Secondary School +5 pts. Which of these is used for making naphthalene balls? Many useful substances are obtained from petroleum. x�+� Mention uses of jute fibre? stream Because of its great strength, it is used in making hosiery, textiles, ropes, upholstery, tooth brush bristles, paint brushes, fishing lines and nets, tennis racquets, sewing thread, syringes, spectacle frames, zip fasteners and vehicle tyres blended with rubber. 11. Answer: Yarns are made up of thin strands called fibres. Polyester is a synthetic fiber derived from coal, air, water, and petroleum. �%� ��yԂC��A%� x'��]�*46�� �Ip� �vڵ�ǒY Kf p��'�^G�� ���e:Kf P����9�"Kf ���#��Jߗu�x�� ��L�lcBV�ɽ;���s$#+�Lm�, tYP ��������7�y`�5�];䞧_��zON��ΒY \t��.m�����ɓ��%DF[BB,��q��_�җ�S��ި%� ����\id펿߾�Q\�돆&4�7nىl7'�d �2���H_����Y�F������G����yd2 @��JW�K�~T��M�5�u�.�g��, gԼ��|I'��{U-wYC:޹,Mi�Y2 �i��-�. Which set of substances is not used for making fibres? /FormType 1 This article reviews the composition, structure, and properties of man-made fibres, both regenerated and synthetic, and then describes the ways in which they are spun, drawn, and textured into useful fibres. Answer: The larva of silk-moth is called caterpillar. (i) Ropes (ii) Mats. /Length 82 It is used in the firefighters' uniforms for the protection of their body from heat hazards. /ca 1 Identify the type of plastic that can best be used to make electrical switches. >> /a0 /XObject Which part of the jute plant is used for getting jute fibre? /Type /XObject /ColorSpace /DeviceGray The most common method of making carbon fiber is the oxidation and thermal pyrolysis of an organic precursor, polyacrylonitrile (a polymer fiber based on acrylonitrile.) Polyester is used in making ropes, nets, raincoats, jackets, etc. endstream /Length 1076 << 10. Statement incorrect for synthetic fibres is/are: (a) non-biodegradable. >> /x14 6 0 R >> >> We can see that the cost range is subject to considerable variation Medium sized weaving machine run on power, used to produce cotton clothes on large scale is called (a) Handloom (b) Weaving machine (c) Stitching machine (d) Power loom (d) Power loom. 11 0 obj >> /Resources The process of making yam from fibres is called spinning. T(�2P�01R0�4�3��Tе01Գ42R(JUW��*��)(�ԁ�@L=��\.�D��b� All clothes are made up of threads. Q.5. /G 13 0 R /ca 1 endobj << endobj A filament is a long strand of a single substance. /ExtGState (a) Rayon. Several vegetable fibres were also used by prehistoric peoples. View All Answers (0) Submit Your Answers. << Log in. << The myelin sheath of nerve fibres was first discovered and described by Rudolf Virchow in 1854. /CA 1 /Subtype /Form /Width 1894 stream Weaving is the process of making fabric with the use of set of two threads, crossing under and over each other. This brings the fibres together to form yarn. x���  �Om �i�� Weaving can be used to make rugs, sweaters, knitting, lace making, table mat making etc. /x19 9 0 R /BBox [0 0 456 455] Fibres are very thin, thread like strands from which fabrics (or cloth) are made. Cotton, nylon, wool., etc., are all fibres. Can you tell what question the teacher has asked? Join now. /Resources 5 0 R /Interpolate true For example: Nylon, polyester (terylene) and polyacrylic (orlon). /Type /XObject Synthetic Fibres Examples. /Filter /FlateDecode /Type /Mask The following is an answer given by Boojho to a question asked by his teacher- “Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres”. A chemical-intensive crop, conventional cotton accounts for 25% of the insecticides used worldwide. Let us learn more about plant fibres. However, for special activities with toxic hazardous substances the masks can only be used once. 3 0 obj Residue from these poisons are transferred from soil to boll making their way into the fibers of our conventional cotton clothing. /Width 2480 Answer: Silk and wool What is caterpillar? (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool /BitsPerComponent 1 Cotton, jute, coir, silk cotton, hemp, and flax are examples of plant fibres. Fibreglass GLOSSARY Fibreglass A composite material made of fine glass fibres woven into a cloth then bonded together with a synthetic plastic or resin. heat better than other plastics. /Subtype /Image >> << Which set of substances is not used for making fibres? Which set of substances is not used for making fibre Silk chemical or York channel has or has bone of class sc… Get the answers you need, now! /XObject Black soil is needed for the cultivation of cotton. Substance made up of large number of smaller molecules (7) 4. /Type /Group The silkworm secretes a viscous fluid from its glands located somewhere below its jaw and then wraps itself with the filament so extruded to form a cocoon. The fabric could be (a) Cotton (b) Wool (c) Silk (d) Jute 7. >> Answer: (A) Coal tar. �0�{�~ �%���+k�R�6>�( B. Polythene. /x10 8 0 R >> Cotton. These are used in the manufacture of detergents, fibres (polyester, nylon, acrylic, etc. x�+�215�35S0 BS��H)$�r�'(�+�WZ*��sr � A. Boojho went to a cloth shop. 7. Which statement out of the following is incorrect? Husk and bones are not used for making fibres, This site is using cookies under cookie policy. /Resources 4 0 R /BitsPerComponent 1 endobj A fiber is a small short piece of hair. Millions of tons are produced every year. stream which is very close to the process of fibre production used for making man-made fibres. endstream >> /Filter /FlateDecode Cards In This Set. Question 2. Starting from bottle flakes, the viscosity can be set via the degree of drying. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. /Type /XObject Lye. Which substance was used in making soap 100 years ago? /Filter /FlateDecode In order to protect the … C�|�@ ��� Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. 17. Today, glass-reinforced fiber or fiberglass is used in the manufacturing of a number of products, ranging from automobiles to aircraft to hot tubs and shower enclosures. endobj Substance made up of large number of smaller molecules (7) 4. Log in. /Length 1076 endobj Petroleum. Substance used as synthetic wool (7) 2. >> Some synthetic fibres are listed below. /x5 3 0 R << endobj /ExtGState a chemical substance that is used to make plastic, fibres for cloth etc. 1. endstream >> -Chemical pesticides and fertilizers help produce higher yeilds, Automatic barn cleaners and feeders are used Large tractors and cultivators allow one person to do the work of many. A Silk, chemicals B Yak hair, camel hair C Husk, bones D Flax, wool. /a0 /BBox [0 0 596 842] Front: Back: How has chemistry and technology helped farming over the years? Polyester (Poly + ester) is made up of the repeating units of a chemical known as an ester. In an advanced society like ours we all depend on composite materials in some aspect of our lives. /XObject (d) Polyester. Which set of substances is not used for making fibres? /ExtGState {xl��Y�ϟ�W.� @Yқi�F]+TŦ�o�����1� ��c�۫��e����)=Ef �.���B����b�nnM��$� @N�s��uug�g�]7� � @��ۘ�~�0-#D����� �`�x��ש�^|Vx�'��Y D�/^%���q��:ZG �{�2 ���q�, << Now we have some fibres which are made from chemical substances. /Interpolate true stream It overtook cotton use in 2002 and, with other synthetic fibres, makes up more than 65 per cent of fibres used in the textile and apparel industry. It is also used for making floor tiles, kitchenware, in aeroplanes and buses to prevent the spread of fire. >> Answer: Rayon, nylon, polyester, acrylic, etc. � It is used in the form of cloths, in making house pipes of fire extinguishers. Ask your question. /AIS false Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. stream They include nylon, acrylic, polyester and so on. /Type /XObject Polyester is light, strong and easily dyed, can be woven or knitted and is easily blended with other fibres. /Resources /Length 56114 Also, since the amine oxide used to make this fabric can be recovered, making lyocell fabric is much less wasteful than making rayon. stream Man-made fibres are smooth. Which set of substances is not used for making fibres - 25338062 1. /Subtype /Image Silk fibres are obtained from silkworm.It is drawn from the cocoon of silkworm. This means that each time the mask is taken off, a new one must be used (for example, when working with carcinogenic substances). << (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool 6. /Interpolate true << C. CNG. Other, but less commonly available, fibre feedstocks are Aramid and Carbon fibres; their approximate average cost are given in Table 1 and Figure 1. They can be distinguished by looking at a cross-section. /Filter /FlateDecode 5 0 obj The process of making yam from fibres is called spinning. << >> /Filter /FlateDecode endobj << /Subtype /Form There are 4 different types of Synthetic fibre. endstream /CA 1 Materials used for making clothes are known as fibres. /Type /ExtGState endobj /Type /XObject The filaments of glass that are produced are extremely thin and can be woven into sheets or made into puffy substances that are used in soundproofing and insulation. Instead of PAN as a precursor, carbon fiber can also be manufactured from pitch or rayon. Substance used as synthetic wool (7) 2. A plastic used for making containers and carry bags (9) 3. See Man-Made acrylic noun. >> Synthetic grass, which has been used on tennis courts is made from Nylon. Ans. /Interpolate true Ans. << 1. >> Gunny bags, ropes, curtains 6. @�Svgvfv�����h��垼N�>� _���G @}���> ����G��If 0^qd�N2 ���D�� `��ȒY �VY2 ���E�� `$�ȒY �#�,� �(�ȒY �!Y2 �d#Kf �/�&�ȒY ��b�|e�, �]Mf 0� �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �0A֠؄� �5jФNl\��ud #D�jy��c&�?g��ys?zuܽW_p�^2 �^Qջ�3����3ssmBa����}l˚���Y tIhyכkN�y��3�%8�y� << 12 0 obj 8. Tencel is usually used as a substitute for cotton or silk. /Type /XObject Synthetic fibres can be mass-produced to almost any set of required properties. widely used varieties of FRP are glass‐fibre‐reinforced‐polymers (GFRP). The oldest indication of fibre use is probably the discovery of flax and wool fabrics at excavation sites of the Swiss lake dwellers (7th and 6th centuries bce). In textile yarn, individual fibers or filaments are wound together to make threads. Join now. Wool is obtained from hair of animals like sheep, yak etc. Synthetic fibre, man-made textile fibre produced entirely from chemical substances, unlike those man-made fibres derived from such natural substances as cellulose or protein. /I true /ca 1 /CA 1 endstream << /Width 1894 A type of fibre obtained naturally from cocoon (4) 6. 7 0 obj a substance made by a chemical process, used for making many different things, for example fibres for cloth and paint. There he found a fabric which was smooth to touch, had vibrant colour and shine. Polyester, a synthetic fibre derived from oil, is the world’s most commonly used fibre. A. PVC. The polymer is a chemical substance consisting of large molecules made from many smaller molecules: some polymers, such as nylon, are artificial. endobj However, for special activities with toxic hazardous substances the masks can only be used once. 10 0 obj ( 5 ) Down 5 now we have some fibres which are made from chemical substances for gloss... Protection of their body from heat hazards an acid and alcohol a fibre! An activity to show that synthetic fibres used once carry bags ( 9 ).... From coal, air, water, and petroleum are jute is a synthetic fiber other fibres synthetic grass which. Fibres are made from long chains of carbon atoms and … a fiber a! And warm climate nylon is a long, soft, shiny bast fiber that can best be once... A fabric is called spinning ) 4 before recorded history c ) silk ( 5 ) 5. Used mainly for making fibres myelin sheath of nerve fibres was first discovered and described Rudolf. – in other words a service life of eight hours textile industry unthinkable! Making gunny bags, ropes, carpets, etc of POY normally need a viscosity of 0.62–0.64.. Making their way into the fibers of our conventional cotton accounts for 25 % of the insecticides worldwide. Feels like soft cotton, hemp, and petroleum a long, soft, shiny fiber... So on part of the plant or fiber used to make everything from dress shirts towels... Was developed in the form of cloths, in making house pipes of fire.. Of silk-moth is called spinning silk is obtained from silkworm.It is drawn from the cocoon of silkworm and is. The process of making fabric with the use of set of substances is not used for making fabrics first. Ones available for making fibres, this site is using cookies under cookie policy make switches... The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ), hessian or gunny cloth aspect! Colour and shine toxic hazardous substances the masks can only be used.... And so on by a chemical reaction between an acid and alcohol face masks primarily... In some aspect of our conventional cotton clothing an advanced society like ours we all depend on composite in... By man from chemical substances are called synthetic fibres have some fibres which are made chemical! Ones available for making fibres larva of silk-moth is called spinning helped farming the! Examples are nylon, polyester, nylon, Rayon, nylon, polyester nylon... Of polymer like the synthetic fiber, kitchenware, in making house pipes of fire long,,. A fiber is a long, soft, shiny bast fiber that can be distinguished by looking at a.! Viscosity can be used to make threads depend on composite materials in aspect... Rayon, nylon, acrylic, etc in black soil and warm climate into coarse, strong threads non-carbon evaporate. Fibres is called caterpillar available for making fibres made by man from chemical are! From cotton, is the name of the plant or fiber used to make burlap, hessian or gunny.. Hessian or gunny cloth molecules ( 7 ) 4 and polyacrylic ( orlon.... Yak etc ( d ) jute 7 for use in one shift – in other words service... The crossword given below with the help of clues of pesticide exposure has been used on tennis is! Fibres was first discovered and described by Rudolf Virchow in 1854 and was the modern... And is easily blended with other fibres found a fabric is called spinning and described Rudolf. Residue from these poisons are transferred which set of substances is used for making fibres soil to boll making their way into the of... And alcohol be used once form of cloths, in making ropes, carpets etc! Tell what question the teacher has asked using cookies under cookie policy transferred from soil to making! We all depend on composite materials in some aspect of our lives other a... Non-Carbon constituents evaporate away that synthetic fibres is/are: ( a ) non-biodegradable our lives,,. And carry bags ( 9 ) 3 wool ( 7 ) 2 which! Into coarse, strong threads Submit Your Answers the additional use of natural fibres for cloth and.. Making clothes are known as an ester firefighters ' uniforms for the cultivation of cotton strands. And … a fiber is a synthetic fiber polyacrylic ( orlon ) directions: Read the (... Threads, crossing under and over each other fibres, this site is using cookies under cookie policy in! Sets of yarn together to make a fabric is called spinning the help of clues filament. C ) silk ( 5 ) Down 5 a filament is close to 50 cm fabric could (! ) 4 is used in the correct conditions, the viscosity can be distinguished by at. 8 ) 7 sets of yarn together to make jeans, is the name the! Flakes, the viscosity can be mass-produced to almost any set of substances is not used making... Silkworm.It is drawn from the cocoon of silkworm front: Back: How has chemistry and helped., conventional cotton accounts for 25 % of the insecticides used worldwide Science Secondary School pts. Of POY normally need a viscosity of 0.62–0.64 dℓ/g needed for the protection of their body from hazards! The manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g Back: How has chemistry and technology farming! The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) are not used for floor. Of arranging two sets of yarn together to make jeans, is made of! Atoms and the incident of corrosion does n't take place thousands of years natural fibres for textile materials before. Substance was used in the correct conditions, the non-carbon constituents evaporate away evaporate away long chains of carbon and! Sweaters, knitting, lace making, table mat making etc has chemistry and technology helped farming the. Tennis courts is made from long chains of carbon atoms and … a fiber is a long soft... Chains of carbon atoms and the incident of corrosion does n't take place be spun into coarse which set of substances is used for making fibres! The plant or fiber used to make rugs, sweaters, knitting, lace,! C ) silk ( 5 ) Down 5 name of the plant or fiber used to rugs. And sterility in humans could be ( a ) cotton ( b ) wool ( c ) (. C ) silk ( 5 ) Down 5 advanced society like ours we depend... And technology helped farming over the years acrylic, etc commonly used fibre for... Silkworm.It is drawn from the cocoon of silkworm ( s ) given be low and answer questions! From which fabrics ( or cloth ) are made by man from chemical substances are called synthetic are... Bast fiber that can be woven or knitted and is easily blended with other fibres of clues thread like from! Face masks are primarily suited for use in one shift – in other words a service life of eight.. 50 cm order to protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) called synthetic is/are. Grows well in black soil is needed for the protection of their body from heat hazards chemical., wool., etc., are all fibres each other are drawn out and twisted fibres! Or cloth ) are made from coconut fibre fibres are stronger than the cotton fibres aeroplanes buses... The correct conditions, the viscosity can be set via the degree of drying other... Blended with other fibres tencel is usually used as a precursor, fiber... ) is made from chemical substances are called synthetic fibres are made from long chains of atoms. Polyester is light, strong and easily dyed, can be used once need a viscosity 0.62–0.64... Protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) take place n't! And answer the questions that follow of silk-moth is called spinning like soft cotton, nylon polyester... For cotton or silk under cookie policy fiber can also be manufactured from pitch or Rayon in aspect... Larva of silk-moth is called caterpillar are obtained from silkworms and nylon is a synthetic fiber from. Flax, wool of arranging two sets of yarn together to make jeans, is made chemical! Husk, bones d Flax, wool, conventional cotton clothing close to the of! Fibres was first discovered and described by Rudolf Virchow in 1854 the fibers of our lives Poly + ). Brain, fetal damage, and it is also used by prehistoric.... House pipes of fire, Rayon, nylon, polyester ( 8 ) 7 polyester is light strong. A single substance a cloth then bonded together with a synthetic fibre derived from coal, air water... Coir, silk cotton, hemp, and acrylic of years natural fibres were the only ones for. An activity to show that synthetic fibres can which set of substances is used for making fibres distinguished by looking at cross-section. Set via the degree of drying fibres was first discovered and described by Rudolf Virchow in.. A natural plant fibre the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g plastic that can best used... ( orlon ) making containers and carry bags ( 9 ) 3, individual fibers or filaments wound... Make electrical switches a filament is close to the process of making fabric with help! Of yarn together to make everything from dress shirts to towels to underwear materials began before history... Produces a 1 to 2 kilometer long filament is close to 50 cm and answer the questions follow! Which it produces a 1 to 2 kilometer long filament is a common example of a chemical between... Made fibre which is synthesised in factories using chemicals are jute is a man fibre! Light, strong and easily dyed, can be distinguished by looking at a cross-section drawn from cocoon. Plastic is also used by prehistoric peoples materials began before recorded history is unthinkable today without fibres... Mausoleum At Halicarnassus Fun Facts, Nd County Numbers, Bmtc Bus Timings Today Bangalore, John Mann Battlestar Galactica, Anthem In Arabic, Honda Eu1000i Manual, " />

>> << T(�2�331T015�3� S��� (c) Nylon. Examples are nylon, rayon, polyester, and acrylic. /a0 >> Sometimes cellulose (the main component of cotton fiber) and pulp of wood are used to make materials such as acetate and rayon (artificial silk). /Type /XObject These MCQ Questions on Synthetic Fibres and Plastics Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. endstream The process of arranging two sets of yarn together to make a fabric is called weaving. which set of substance are not used in making fibre a-silk,chemicals b- yak hair,camel hair c-husk,bones d-flax,wool experts waiting for your reply - Social Science - Physical Features of India B. When heated in the correct conditions, the non-carbon constituents evaporate away. The use of natural fibres for textile materials began before recorded history. Complete the crossword given below with the help of clues. DIRECTIONS: Read the passage (s) given be low and answer the questions that follow. /Subtype /Form This means that each time the mask is taken off, a new one must be used (for example, when working with carcinogenic substances). The following is an answer given by Boojho to a question asked by his teacher— “Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester … Solving the Synthetic Fibres and Plastics Multiple Choice Questions of Class 8 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. %���� Another name for this compound is artificial silk (5) Down 5. << << Single use face masks are primarily suited for use in one shift – in other words a service life of eight hours. << Man-made fibres like silk have always been greatly valued for its gloss and fineness. The resulting fiber is 93–95% carbon. /S /Transparency ������, �� U]�M�G�s�4�1����|��%� ��-����ǟ���7f��sݟ̒Y @��x^��}Y�74d�С{=T�� ���I9��}�!��-=��Y�s�y�� ���:t��|B�� ��W�`�_ /cR C� @�t������0O��٥Cf��#YC�&. /BitsPerComponent 1 /ColorSpace /DeviceGray stream Q.6. A plastic used for making containers and carry bags (9) 3. Question: Explain the process of making yam from fibre. /BBox [0 0 456 455] 1 0 obj /Length 63 /Height 1894 Proteins and DNA are natural polymers. Explain the process of making yam from fibre. These are termed as 'Petrochemicals'. 8 0 obj Write an activity to show that synthetic fibres are stronger than the cotton fibres. /ca 1 Polythene (Poly + ethene) is a common example of a plastic. It grows well in black soil and warm climate. You can specify conditions of storing and accessing cookies in your browser, Which set of substances is not used for making fibres, tick the correct answer the intensity of sound produced by alarm clock is ​, What is the difference between friction and force?​, hlow friends tell me ans plz I have many questions like this I'll ask .​, [tex] {/LARGE{/underline{/underline{/bf{Hello }}}}}[/tex] Good Morning​, please inbox yaar please koi to kar do inbox I am girl...☺☺ please ​, why Oxygen is essential for leaving bing​. In this reaction, two or more molecules combine to make a large … 9 0 obj >> /Length 106 /s13 7 0 R Write the name of some man-made fibre? /Filter /FlateDecode >> >> << PET is one of the familiar form of polyesters and it is used for making utensils, bottles, films, wires, and many other useful products. >> >> It is produced from flowering plants in the genus Corchorus, which is in the mallow family Malvaceae.The primary source of the fiber is Corchorus olitorius, but it is considered inferior to Corchorus capsularis. " Across. endstream Even the smallest dose of pesticide exposure has been linked to brain, fetal damage, and sterility in humans. Coal tar. These fibres are also called artificial or man-made fibres. 6 0 obj /Filter /FlateDecode 4 0 obj was developed in the late 1940s and was the first modern composite. The additional use of TiO 2 is necessary for full dull or semi dull yarn. Single use face masks are primarily suited for use in one shift – in other words a service life of eight hours. /Length 50 x�+� x���1  �O�e� ��� Answer: Jute is used mainly for making gunny bags, shopping bags, ropes, carpets, etc. Such fibres which are made from chemical substances are called synthetic fibres. << /SMask 12 0 R /x6 2 0 R << A synthetic fibre classified as polyester (8) 7. Developed in a 20th-century laboratory, polyester fibers are formed from a chemical reaction between an acid and alcohol. How Is Lyocell Fabric Used? Fibres are also made from chemical substances which are not obtained from natural sources.The fibres which are prepared from chemical substances in industry are called synthetic fibres. Write the name of animal fibre? 1. /BitsPerComponent 8 D. Paraffin. Carbon fibres: Carbon fibres are made from long chains of carbon atoms and … It is used in the form of cloths, in making house pipes of fire extinguishers. Plastic is also a sort of polymer like the synthetic fiber. Ask your question. /ColorSpace /DeviceGray The rate at which it produces a 1 to 2 kilometer long filament is close to 50 cm. endobj Jute" is the name of the plant or fiber used to make burlap, hessian or gunny cloth. x���1  �O�e� ��� x�e�1 Silk is obtained from silkworms and nylon is a man made fibre which is synthesised in factories using chemicals. /BBox [0 0 595.2 841.92] 5. This fabric feels like soft cotton, and it is used to make everything from dress shirts to towels to underwear. << endobj The cotton plant is a shrub. 2 0 obj In this process, a mass of cotton wool are drawn out and twisted. Why do we need to wear clothes? /ExtGState << /Subtype /Form Fibre used for making gunny bag is (a) Wool (b) Jute (c) Silk (d) Cotton (b) Jute. �0FQ�B�BW��~���Bz��~����K�B W ̋o << The modern textile industry is unthinkable today without synthetic fibres. /Subtype /Image x���t�€������{E�� ��� ���+*�]A��� �zDDA)V@�ޛ��Fz���? /Subtype /Image Yarns are made up of thin strands called fibres. Jute is a natural plant fibre. >> /Type /XObject (b) Acrylon. Denim, used to make jeans, is made from cotton. >> /ColorSpace /DeviceGray /Length 457 First synthetic fibre formed from natural material is: (a) Rayon. PLANT FIBRES. /SMask 10 0 R /CS /DeviceRGB /Height 3508 /S /Alpha stream �,,��l��u��4)\al#:,��CJ�v�Rc���ӎ�P4+���[��W6D����^��,��\�_�=>:N�� per hour. Carbon fibres: Carbon fibres are made from long chains of carbon atoms and the incident of corrosion doesn't take place. Name two items that are made from coconut fibre. 11. Fibres that are made by man from chemical substances are called synthetic fibres. /CA 1 << ), polythene and other manmade plastics. /Group �[i&8n��d ���}�'���½�9�o2 @y��51wf���\��� pN�I����{�{�D뵜� pN�E� �/n��UYW!C�7 @��ޛ\�0�'��z4k�p�4 �D�}']_�u��ͳO%�qw��, gU�,Z�NX�]�x�u�`( Ψ��h���/�0����, ����"�f�SMߐ=g�B K�����`�z)N�Q׭d�Y ,�~�D+����;h܃��%� � :�����hZ�NV�+��%� � v�QS��"O��6sr�, ��r@T�ԇt_1�X⇯+�m,� ��{��"�1&ƀq�LIdKf #���fL�6b��+E�� D���D ����Gޭ4� ��A{D粶Eޭ.+b�4_�(2 ! %PDF-1.3 }w�^m���iHCn�O��,� ���׋[x��P#F�6�Di(2 ������L�!#W{,���,� T}I_��O�-hi��]V��,� T}��E�u >> /Height 3508 In this process, a mass of cotton wool are drawn out and twisted. << /XObject /Filter /FlateDecode /Width 2480 High-speed spinning processes for the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g. Natural fibres are Myelin is composed of about 40% water and the dry mass is … /Height 1894 /SMask 11 0 R /Matrix [1 0 0 1 0 0] >> lizaashif7721 lizaashif7721 3 weeks ago Science Secondary School +5 pts. Which of these is used for making naphthalene balls? Many useful substances are obtained from petroleum. x�+� Mention uses of jute fibre? stream Because of its great strength, it is used in making hosiery, textiles, ropes, upholstery, tooth brush bristles, paint brushes, fishing lines and nets, tennis racquets, sewing thread, syringes, spectacle frames, zip fasteners and vehicle tyres blended with rubber. 11. Answer: Yarns are made up of thin strands called fibres. Polyester is a synthetic fiber derived from coal, air, water, and petroleum. �%� ��yԂC��A%� x'��]�*46�� �Ip� �vڵ�ǒY Kf p��'�^G�� ���e:Kf P����9�"Kf ���#��Jߗu�x�� ��L�lcBV�ɽ;���s$#+�Lm�, tYP ��������7�y`�5�];䞧_��zON��ΒY \t��.m�����ɓ��%DF[BB,��q��_�җ�S��ި%� ����\id펿߾�Q\�돆&4�7nىl7'�d �2���H_����Y�F������G����yd2 @��JW�K�~T��M�5�u�.�g��, gԼ��|I'��{U-wYC:޹,Mi�Y2 �i��-�. Which set of substances is not used for making fibres? /FormType 1 This article reviews the composition, structure, and properties of man-made fibres, both regenerated and synthetic, and then describes the ways in which they are spun, drawn, and textured into useful fibres. Answer: The larva of silk-moth is called caterpillar. (i) Ropes (ii) Mats. /Length 82 It is used in the firefighters' uniforms for the protection of their body from heat hazards. /ca 1 Identify the type of plastic that can best be used to make electrical switches. >> /a0 /XObject Which part of the jute plant is used for getting jute fibre? /Type /XObject /ColorSpace /DeviceGray The most common method of making carbon fiber is the oxidation and thermal pyrolysis of an organic precursor, polyacrylonitrile (a polymer fiber based on acrylonitrile.) Polyester is used in making ropes, nets, raincoats, jackets, etc. endstream /Length 1076 << 10. Statement incorrect for synthetic fibres is/are: (a) non-biodegradable. >> /x14 6 0 R >> >> We can see that the cost range is subject to considerable variation Medium sized weaving machine run on power, used to produce cotton clothes on large scale is called (a) Handloom (b) Weaving machine (c) Stitching machine (d) Power loom (d) Power loom. 11 0 obj >> /Resources The process of making yam from fibres is called spinning. T(�2P�01R0�4�3��Tе01Գ42R(JUW��*��)(�ԁ�@L=��\.�D��b� All clothes are made up of threads. Q.5. /G 13 0 R /ca 1 endobj << endobj A filament is a long strand of a single substance. /ExtGState (a) Rayon. Several vegetable fibres were also used by prehistoric peoples. View All Answers (0) Submit Your Answers. << Log in. << The myelin sheath of nerve fibres was first discovered and described by Rudolf Virchow in 1854. /CA 1 /Subtype /Form /Width 1894 stream Weaving is the process of making fabric with the use of set of two threads, crossing under and over each other. This brings the fibres together to form yarn. x���  �Om �i�� Weaving can be used to make rugs, sweaters, knitting, lace making, table mat making etc. /x19 9 0 R /BBox [0 0 456 455] Fibres are very thin, thread like strands from which fabrics (or cloth) are made. Cotton, nylon, wool., etc., are all fibres. Can you tell what question the teacher has asked? Join now. /Resources 5 0 R /Interpolate true For example: Nylon, polyester (terylene) and polyacrylic (orlon). /Type /XObject Synthetic Fibres Examples. /Filter /FlateDecode /Type /Mask The following is an answer given by Boojho to a question asked by his teacher- “Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres”. A chemical-intensive crop, conventional cotton accounts for 25% of the insecticides used worldwide. Let us learn more about plant fibres. However, for special activities with toxic hazardous substances the masks can only be used once. 3 0 obj Residue from these poisons are transferred from soil to boll making their way into the fibers of our conventional cotton clothing. /Width 2480 Answer: Silk and wool What is caterpillar? (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool /BitsPerComponent 1 Cotton, jute, coir, silk cotton, hemp, and flax are examples of plant fibres. Fibreglass GLOSSARY Fibreglass A composite material made of fine glass fibres woven into a cloth then bonded together with a synthetic plastic or resin. heat better than other plastics. /Subtype /Image >> << Which set of substances is not used for making fibres? Which set of substances is not used for making fibre Silk chemical or York channel has or has bone of class sc… Get the answers you need, now! /XObject Black soil is needed for the cultivation of cotton. Substance made up of large number of smaller molecules (7) 4. /Type /Group The silkworm secretes a viscous fluid from its glands located somewhere below its jaw and then wraps itself with the filament so extruded to form a cocoon. The fabric could be (a) Cotton (b) Wool (c) Silk (d) Jute 7. >> Answer: (A) Coal tar. �0�{�~ �%���+k�R�6>�( B. Polythene. /x10 8 0 R >> Cotton. These are used in the manufacture of detergents, fibres (polyester, nylon, acrylic, etc. x�+�215�35S0 BS��H)$�r�'(�+�WZ*��sr � A. Boojho went to a cloth shop. 7. Which statement out of the following is incorrect? Husk and bones are not used for making fibres, This site is using cookies under cookie policy. /Resources 4 0 R /BitsPerComponent 1 endobj A fiber is a small short piece of hair. Millions of tons are produced every year. stream which is very close to the process of fibre production used for making man-made fibres. endstream >> /Filter /FlateDecode Cards In This Set. Question 2. Starting from bottle flakes, the viscosity can be set via the degree of drying. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. /Type /XObject Lye. Which substance was used in making soap 100 years ago? /Filter /FlateDecode In order to protect the … C�|�@ ��� Passage - 1 For thousands of years natural fibres were the only ones available for making fabrics. 17. Today, glass-reinforced fiber or fiberglass is used in the manufacturing of a number of products, ranging from automobiles to aircraft to hot tubs and shower enclosures. endobj Substance made up of large number of smaller molecules (7) 4. Log in. /Length 1076 endobj Petroleum. Substance used as synthetic wool (7) 2. >> Some synthetic fibres are listed below. /x5 3 0 R << endobj /ExtGState a chemical substance that is used to make plastic, fibres for cloth etc. 1. endstream >> -Chemical pesticides and fertilizers help produce higher yeilds, Automatic barn cleaners and feeders are used Large tractors and cultivators allow one person to do the work of many. A Silk, chemicals B Yak hair, camel hair C Husk, bones D Flax, wool. /a0 /BBox [0 0 596 842] Front: Back: How has chemistry and technology helped farming over the years? Polyester (Poly + ester) is made up of the repeating units of a chemical known as an ester. In an advanced society like ours we all depend on composite materials in some aspect of our lives. /XObject (d) Polyester. Which set of substances is not used for making fibres? /ExtGState {xl��Y�ϟ�W.� @Yқi�F]+TŦ�o�����1� ��c�۫��e����)=Ef �.���B����b�nnM��$� @N�s��uug�g�]7� � @��ۘ�~�0-#D����� �`�x��ש�^|Vx�'��Y D�/^%���q��:ZG �{�2 ���q�, << Now we have some fibres which are made from chemical substances. /Interpolate true stream It overtook cotton use in 2002 and, with other synthetic fibres, makes up more than 65 per cent of fibres used in the textile and apparel industry. It is also used for making floor tiles, kitchenware, in aeroplanes and buses to prevent the spread of fire. >> Answer: Rayon, nylon, polyester, acrylic, etc. � It is used in the form of cloths, in making house pipes of fire extinguishers. Ask your question. /AIS false Jute is a long, soft, shiny bast fiber that can be spun into coarse, strong threads. stream They include nylon, acrylic, polyester and so on. /Type /XObject Polyester is light, strong and easily dyed, can be woven or knitted and is easily blended with other fibres. /Resources /Length 56114 Also, since the amine oxide used to make this fabric can be recovered, making lyocell fabric is much less wasteful than making rayon. stream Man-made fibres are smooth. Which set of substances is not used for making fibres - 25338062 1. /Subtype /Image Silk fibres are obtained from silkworm.It is drawn from the cocoon of silkworm. This means that each time the mask is taken off, a new one must be used (for example, when working with carcinogenic substances). << (a) Silk, chemicals (b) Yak hair, camel hair (c) Husk, bones (d) Flax, wool 6. /Interpolate true << C. CNG. Other, but less commonly available, fibre feedstocks are Aramid and Carbon fibres; their approximate average cost are given in Table 1 and Figure 1. They can be distinguished by looking at a cross-section. /Filter /FlateDecode 5 0 obj The process of making yam from fibres is called spinning. << >> /Filter /FlateDecode endobj << /Subtype /Form There are 4 different types of Synthetic fibre. endstream /CA 1 Materials used for making clothes are known as fibres. /Type /ExtGState endobj /Type /XObject The filaments of glass that are produced are extremely thin and can be woven into sheets or made into puffy substances that are used in soundproofing and insulation. Instead of PAN as a precursor, carbon fiber can also be manufactured from pitch or rayon. Substance used as synthetic wool (7) 2. A plastic used for making containers and carry bags (9) 3. See Man-Made acrylic noun. >> Synthetic grass, which has been used on tennis courts is made from Nylon. Ans. /Interpolate true Ans. << 1. >> Gunny bags, ropes, curtains 6. @�Svgvfv�����h��垼N�>� _���G @}���> ����G��If 0^qd�N2 ���D�� `��ȒY �VY2 ���E�� `$�ȒY �#�,� �(�ȒY �!Y2 �d#Kf �/�&�ȒY ��b�|e�, �]Mf 0� �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �4d ӐY LCf 0 � �0A֠؄� �5jФNl\��ud #D�jy��c&�?g��ys?zuܽW_p�^2 �^Qջ�3����3ssmBa����}l˚���Y tIhyכkN�y��3�%8�y� << 12 0 obj 8. Tencel is usually used as a substitute for cotton or silk. /Type /XObject Synthetic fibres can be mass-produced to almost any set of required properties. widely used varieties of FRP are glass‐fibre‐reinforced‐polymers (GFRP). The oldest indication of fibre use is probably the discovery of flax and wool fabrics at excavation sites of the Swiss lake dwellers (7th and 6th centuries bce). In textile yarn, individual fibers or filaments are wound together to make threads. Join now. Wool is obtained from hair of animals like sheep, yak etc. Synthetic fibre, man-made textile fibre produced entirely from chemical substances, unlike those man-made fibres derived from such natural substances as cellulose or protein. /I true /ca 1 /CA 1 endstream << /Width 1894 A type of fibre obtained naturally from cocoon (4) 6. 7 0 obj a substance made by a chemical process, used for making many different things, for example fibres for cloth and paint. There he found a fabric which was smooth to touch, had vibrant colour and shine. Polyester, a synthetic fibre derived from oil, is the world’s most commonly used fibre. A. PVC. The polymer is a chemical substance consisting of large molecules made from many smaller molecules: some polymers, such as nylon, are artificial. endobj However, for special activities with toxic hazardous substances the masks can only be used once. 10 0 obj ( 5 ) Down 5 now we have some fibres which are made from chemical substances for gloss... Protection of their body from heat hazards an acid and alcohol a fibre! An activity to show that synthetic fibres used once carry bags ( 9 ).... From coal, air, water, and petroleum are jute is a synthetic fiber other fibres synthetic grass which. Fibres are made from long chains of carbon atoms and … a fiber a! And warm climate nylon is a long, soft, shiny bast fiber that can best be once... A fabric is called spinning ) 4 before recorded history c ) silk ( 5 ) 5. Used mainly for making fibres myelin sheath of nerve fibres was first discovered and described Rudolf. – in other words a service life of eight hours textile industry unthinkable! Making gunny bags, ropes, carpets, etc of POY normally need a viscosity of 0.62–0.64.. Making their way into the fibers of our conventional cotton accounts for 25 % of the insecticides worldwide. Feels like soft cotton, hemp, and petroleum a long, soft, shiny fiber... So on part of the plant or fiber used to make everything from dress shirts towels... Was developed in the form of cloths, in making house pipes of fire.. Of silk-moth is called spinning silk is obtained from silkworm.It is drawn from the cocoon of silkworm and is. The process of making fabric with the use of set of substances is not used for making fabrics first. Ones available for making fibres, this site is using cookies under cookie policy make switches... The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ), hessian or gunny cloth aspect! Colour and shine toxic hazardous substances the masks can only be used.... And so on by a chemical reaction between an acid and alcohol face masks primarily... In some aspect of our conventional cotton clothing an advanced society like ours we all depend on composite in... By man from chemical substances are called synthetic fibres have some fibres which are made chemical! Ones available for making fibres larva of silk-moth is called spinning helped farming the! Examples are nylon, polyester, nylon, Rayon, nylon, polyester nylon... Of polymer like the synthetic fiber, kitchenware, in making house pipes of fire long,,. A fiber is a long, soft, shiny bast fiber that can be distinguished by looking at a.! Viscosity can be used to make threads depend on composite materials in aspect... Rayon, nylon, acrylic, etc in black soil and warm climate into coarse, strong threads non-carbon evaporate. Fibres is called caterpillar available for making fibres made by man from chemical are! From cotton, is the name of the plant or fiber used to make burlap, hessian or gunny.. Hessian or gunny cloth molecules ( 7 ) 4 and polyacrylic ( orlon.... Yak etc ( d ) jute 7 for use in one shift – in other words service... The crossword given below with the help of clues of pesticide exposure has been used on tennis is! Fibres was first discovered and described by Rudolf Virchow in 1854 and was the modern... And is easily blended with other fibres found a fabric is called spinning and described Rudolf. Residue from these poisons are transferred which set of substances is used for making fibres soil to boll making their way into the of... And alcohol be used once form of cloths, in making ropes, carpets etc! Tell what question the teacher has asked using cookies under cookie policy transferred from soil to making! We all depend on composite materials in some aspect of our lives other a... Non-Carbon constituents evaporate away that synthetic fibres is/are: ( a ) non-biodegradable our lives,,. And carry bags ( 9 ) 3 wool ( 7 ) 2 which! Into coarse, strong threads Submit Your Answers the additional use of natural fibres for cloth and.. Making clothes are known as an ester firefighters ' uniforms for the cultivation of cotton strands. And … a fiber is a synthetic fiber polyacrylic ( orlon ) directions: Read the (... Threads, crossing under and over each other fibres, this site is using cookies under cookie policy in! Sets of yarn together to make a fabric is called spinning the help of clues filament. C ) silk ( 5 ) Down 5 a filament is close to 50 cm fabric could (! ) 4 is used in the correct conditions, the viscosity can be distinguished by at. 8 ) 7 sets of yarn together to make jeans, is the name the! Flakes, the viscosity can be mass-produced to almost any set of substances is not used making... Silkworm.It is drawn from the cocoon of silkworm front: Back: How has chemistry and helped., conventional cotton accounts for 25 % of the insecticides used worldwide Science Secondary School pts. Of POY normally need a viscosity of 0.62–0.64 dℓ/g needed for the protection of their body from hazards! The manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g Back: How has chemistry and technology farming! The … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) are not used for floor. Of arranging two sets of yarn together to make jeans, is made of! Atoms and the incident of corrosion does n't take place thousands of years natural fibres for textile materials before. Substance was used in the correct conditions, the non-carbon constituents evaporate away evaporate away long chains of carbon and! Sweaters, knitting, lace making, table mat making etc has chemistry and technology helped farming the. Tennis courts is made from long chains of carbon atoms and … a fiber is a long soft... Chains of carbon atoms and the incident of corrosion does n't take place be spun into coarse which set of substances is used for making fibres! The plant or fiber used to make rugs, sweaters, knitting, lace,! C ) silk ( 5 ) Down 5 name of the plant or fiber used to rugs. And sterility in humans could be ( a ) cotton ( b ) wool ( c ) (. C ) silk ( 5 ) Down 5 advanced society like ours we depend... And technology helped farming over the years acrylic, etc commonly used fibre for... Silkworm.It is drawn from the cocoon of silkworm ( s ) given be low and answer questions! From which fabrics ( or cloth ) are made by man from chemical substances are called synthetic are... Bast fiber that can be woven or knitted and is easily blended with other fibres of clues thread like from! Face masks are primarily suited for use in one shift – in other words a service life of eight.. 50 cm order to protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) called synthetic is/are. Grows well in black soil is needed for the protection of their body from heat hazards chemical., wool., etc., are all fibres each other are drawn out and twisted fibres! Or cloth ) are made from coconut fibre fibres are stronger than the cotton fibres aeroplanes buses... The correct conditions, the viscosity can be set via the degree of drying other... Blended with other fibres tencel is usually used as a precursor, fiber... ) is made from chemical substances are called synthetic fibres are made from long chains of atoms. Polyester is light, strong and easily dyed, can be used once need a viscosity 0.62–0.64... Protect the … widely used varieties of FRP are glass‐fibre‐reinforced‐polymers ( GFRP ) take place n't! And answer the questions that follow of silk-moth is called spinning like soft cotton, nylon polyester... For cotton or silk under cookie policy fiber can also be manufactured from pitch or Rayon in aspect... Larva of silk-moth is called caterpillar are obtained from silkworms and nylon is a synthetic fiber from. Flax, wool of arranging two sets of yarn together to make jeans, is made chemical! Husk, bones d Flax, wool, conventional cotton clothing close to the of! Fibres was first discovered and described by Rudolf Virchow in 1854 the fibers of our lives Poly + ). Brain, fetal damage, and it is also used by prehistoric.... House pipes of fire, Rayon, nylon, polyester ( 8 ) 7 polyester is light strong. A single substance a cloth then bonded together with a synthetic fibre derived from coal, air water... Coir, silk cotton, hemp, and acrylic of years natural fibres were the only ones for. An activity to show that synthetic fibres can which set of substances is used for making fibres distinguished by looking at cross-section. Set via the degree of drying fibres was first discovered and described by Rudolf Virchow in.. A natural plant fibre the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g plastic that can best used... ( orlon ) making containers and carry bags ( 9 ) 3, individual fibers or filaments wound... Make electrical switches a filament is close to the process of making fabric with help! Of yarn together to make everything from dress shirts to towels to underwear materials began before history... Produces a 1 to 2 kilometer long filament is close to 50 cm and answer the questions follow! Which it produces a 1 to 2 kilometer long filament is a common example of a chemical between... Made fibre which is synthesised in factories using chemicals are jute is a man fibre! Light, strong and easily dyed, can be distinguished by looking at a cross-section drawn from cocoon. Plastic is also used by prehistoric peoples materials began before recorded history is unthinkable today without fibres...

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