{"id":10531,"date":"2022-05-17T19:00:45","date_gmt":"2022-05-17T13:30:45","guid":{"rendered":"https:\/\/mcq-questions.com\/?p=10531"},"modified":"2022-05-11T12:13:09","modified_gmt":"2022-05-11T06:43:09","slug":"mcq-questions-for-class-8-science-chapter-3","status":"publish","type":"post","link":"https:\/\/mcq-questions.com\/mcq-questions-for-class-8-science-chapter-3\/","title":{"rendered":"MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics"},"content":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download is available here. MCQ Questions for Class 8 Science with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers and assess their preparation level.<\/p>\n

Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers<\/h2>\n

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. 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. Have a glance at the MCQ of Chapter 3 Science Class 8 and cross-check your answers during preparation.<\/p>\n

Question 1.
\nCellulose is made up of a large number of ………………… units.
\n(a) glucose
\n(b) fructose
\n(c) protein
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) glucose
\nCellulose is made up of a large number of glucose units.<\/p>\n<\/details>\n

\n

Question 2.
\nSynthetic fibres are:
\n(a) strong
\n(b) durable
\n(c) hining
\n(d) all of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) all of these
\nSynthetic fibres are strong, durable and shining<\/p>\n<\/details>\n

\n

Question 3.
\nWhich of the following is not thermoplastics:
\n(a) acrylic
\n(b) polyethylene
\n(c) polystyrene
\n(d) melamine<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) melamine
\nMelamine is not thermoplastics, it is thermosetting plastic. Acrylic, polyethylene and polystyrene are thermoplastic.<\/p>\n<\/details>\n

\n

Question 4.
\nWire made from which fibre is strongest:
\n(a) nylon
\n(b) cotton
\n(c) wool
\n(d) steel<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) nylon
\nWire made from nylon fibre is the strongest.<\/p>\n<\/details>\n

\n

Question 5.
\nPET is form of:
\n(a) steel
\n(b) glass
\n(c) polyester
\n(d) nylon<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) polyester
\nPET is a form of polyester.<\/p>\n<\/details>\n

\n

Question 6.
\nWhich of the following is used to make non-stick cookwares:
\n(a) polyester
\n(b) teflon
\n(c) rayon
\n(d) nylon<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) teflon
\nTeflon is used to make non-stick cookwares.<\/p>\n<\/details>\n

\n

Question 7.
\nWhich of the following is used for making parachutes and stockings:
\n(a) polyester
\n(b) teflon
\n(c) rayon
\n(d) nylon<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) nylon
\nNylon is used for making parachutes and stockings.<\/p>\n<\/details>\n

\n

Question 8.
\nFabrics made of …………………. do not wrinkle easily.
\n(a) polyester
\n(b) teflon
\n(c) rayon
\n(d) nylon<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) nylon
\nFabrics made of polyester do not wrinkle easily.<\/p>\n<\/details>\n

\n

Question 9.
\nWood pulp is used for preparation of:
\n(a) polyester
\n(b) teflon
\n(c) rayon
\n(d) nylon<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) rayon
\nWood pulp is used for preparation of Rayon.<\/p>\n<\/details>\n

\n

Question 10.
\nWhich of the following softens on heating and then can be moulded into various shapes:
\n(a) thermosetting plastic
\n(b) thermoplastic
\n(c) polythene
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) thermoplastic
\nThermoplastic softens on heating and then can be moulded into various shapes.<\/p>\n<\/details>\n

\n

Question 11.
\nWhich of the following once set do not soften on heating:
\n(a) thermoplastic
\n(b) thermosetting plastic
\n(c) polvthene
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) thermosetting plastic
\nThermosetting plastic once set do not soften on heating.<\/p>\n<\/details>\n

\n

Question 12.
\nFood hems are stored \u00a1n plastic containers because they are:
\n(a) corrosive
\n(b) non-corrosive
\n(c) easy to handle
\n(d) all of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) non-corrosive
\nFood items are stored in plastic containers because they are non-corrosive.<\/p>\n<\/details>\n

\n

Question 13.
\nBristles of tooth brush are made from:
\n(a) thermoplastic
\n(b) therniosetting plastic
\n(c) nylon
\n(d) PET<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) nylon
\nBristles of tooth brush are made from nylon because it is soft, flexible and strong.<\/p>\n<\/details>\n

\n

Question 14.
\nWhich of the following can be recycled:
\n(a) carry bags
\n(b) plastic chairs
\n(c) telephone instruments
\n(d) cooker handles<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) telephone instruments
\nTelephone instruments can be recycled as it is made up of thermoplastics.<\/p>\n<\/details>\n

\n

Question 15.
\nWhich of the following cannot be recycled:
\n(a) plastic toys
\n(b) plastic bowls
\n(c) plastic covering on electric wires
\n(d) ball point pens<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) plastic covering on electric wires
\nPlastic covering on electric wire cannot by recycled as it is made up of theremosetting plastics.<\/p>\n<\/details>\n

\n

Question 16.
\nThe fibre that burns readily with smell of burning paper is:
\n(a) acrylic
\n(b) polyester
\n(c) cotton
\n(d) rayon.<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) cotton
\nCotton fibre burns readily with smell of burning paper.<\/p>\n<\/details>\n

\n

Question 17.
\nWhich of the following is a thermosetting plastic:
\n(a) PVC
\n(b) nylon
\n(c) teflon
\n(d) bakelite<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) bakelite
\nBakelite is a thermosetting plastic.<\/p>\n<\/details>\n

\n

Question 18.
\nWhich of the following is obtained from hair of an animal:
\n(a) nylon
\n(b) silk
\n(c) cotton
\n(d) wool<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) wool
\nWool is obtained from hair of an animal (sheep).<\/p>\n<\/details>\n

\n

Question 19.
\nWhich of these fibres is made from raw material obtained from plants:
\n(a) rayon
\n(b) nylon
\n(c) terylene
\n(d) polyester<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) rayon
\nRayon is made from cellulose obtained from wood pulp (plants).<\/p>\n<\/details>\n

\n

Question 20.
\nWhich of the following fibre is synthetic:
\n(a) cotton
\n(b) jute
\n(c) nylon
\n(d) silk<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) nylon
\nNylon is synthetic whereas cotton, jute and silk are natural fibres.<\/p>\n<\/details>\n

\n

Question 21.
\nWhich of the following fibre is natural polymer:
\n(a) rayon
\n(b) cotton
\n(c) polyester
\n(d) polythene<\/p>\n

\nAnswer<\/span><\/summary>\n

(b)cotton
\nCotton is natural polymer whereas rayon, polyester and polythene are synthetic polymers.<\/p>\n<\/details>\n

\n

Question 22.
\nWhich of the following is not biodegradable:
\n(a) aluminium foil
\n(b) papers
\n(c) cow-dung
\n(d) rotten fruits<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) aluminium foil
\nAluminium foil is not biodegradable.<\/p>\n<\/details>\n

\n

Question 23.
\nRayon is:
\n(a) artificial
\n(b) nylon
\n(c) artificial nylon
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) artificial
\nRayon is artificial silk<\/p>\n<\/details>\n

\n

Question 24.
\nPolymer present in plants is:
\n(a) cellulose
\n(b) nylon
\n(c) rubber
\n(d) P.V.C.<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) cellulose
\nPolymer present in plants is cellulose.<\/p>\n<\/details>\n

\n

Question 25.
\nNatural substance is:
\n(a) plastics
\n(b) cement
\n(c) glass
\n(d) wood<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) wood
\nWood is a natural substance where as plastics, cement and glass are man-made substances.<\/p>\n<\/details>\n

\n

Question 26.
\nPolymer present in wood is:
\n(a) nylon
\n(b) cellulose
\n(c) polythene
\n(d) rubber<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) cellulose
\nCellulose polymer is present in wood<\/p>\n<\/details>\n

\n

Question 27.
\nWhich of the following garbage is biodegradable:
\n(a) broken plastics things
\n(b) fruit peels
\n(c) cement
\n(d) iron wastes<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) fruit peels
\nFruit peels are biodegradable.<\/p>\n<\/details>\n

\n

Question 28.
\nPolycot is a mixture of:
\n(a) polythene and cotton
\n(b) polyester and cotton
\n(c) polythene and wool
\n(d) polyester and wool<\/p>\n

\nAnswer<\/span><\/summary>\n

(b) polyester and cotton
\nPolycot is a mixture of polyester and cotton.<\/p>\n<\/details>\n

\n

Question 29.
\nPolywool is a mixture of:
\n(a) polythene and cotton
\n(b) polyester and cotton
\n(c) polythene and wool
\n(d) polyester and wool<\/p>\n

\nAnswer<\/span><\/summary>\n

(d) polyester and wool
\nPolywool is a mixture of polyester and wool.<\/p>\n<\/details>\n

\n

Question 30.
\nA synthetic fibre resembling wool is:
\n(a) rayon
\n(b) nylon
\n(c) acrylic
\n(d) none of these<\/p>\n

\nAnswer<\/span><\/summary>\n

(c) acrylic
\nA synthetic fibre resembling wool is acrylic.<\/p>\n<\/details>\n

\n

Match the Column-A with Cosumn-B:<\/span><\/p>\n

Question 1.<\/p>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Monomers<\/td>\n(i) chemical molecules formed naturally like silk, cotton etc.<\/td>\n<\/tr>\n
(b) Polymers<\/td>\n(ii) chemical molecules synthesized by human.<\/td>\n<\/tr>\n
(c) Natural polymers<\/td>\n(iii) the process of formation of polymers by synthesis of monomers<\/td>\n<\/tr>\n
(d) Synthetic ploymers<\/td>\n(iv) simple chemical molecules made of single unit.<\/td>\n<\/tr>\n
(e) Polymerisation<\/td>\n(v) complex chemical molecules made of many type of single units.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Monomers<\/td>\n(iv) simple chemical molecules made of single unit.<\/td>\n<\/tr>\n
(b) Polymers<\/td>\n(v) complex chemical molecules made of many type of single units.<\/td>\n<\/tr>\n
(c) Natural polymers<\/td>\n(i) chemical molecules formed naturally like silk, cotton etc.<\/td>\n<\/tr>\n
(d) Synthetic ploymers<\/td>\n(ii) chemical molecules synthesized by human.<\/td>\n<\/tr>\n
(e) Polymerisation<\/td>\n(iii) the process of formation of polymers by synthesis of monomers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 2.<\/p>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Rayon<\/td>\n(i) sarees<\/td>\n<\/tr>\n
(b) Nylon<\/td>\n(ii) carpets<\/td>\n<\/tr>\n
(c) Acrylic<\/td>\n(iii) utensils<\/td>\n<\/tr>\n
(d) Polyester<\/td>\n(iv) sweaters<\/td>\n<\/tr>\n
(e) PET<\/td>\n(v) socks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Rayon<\/td>\n(ii) carpets<\/td>\n<\/tr>\n
(b) Nylon<\/td>\n(v) socks<\/td>\n<\/tr>\n
(c) Acrylic<\/td>\n(iv) sweaters<\/td>\n<\/tr>\n
(d) Polyester<\/td>\n(i) sarees<\/td>\n<\/tr>\n
(e) PET<\/td>\n(iii) utensils<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

Question 3.<\/p>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Melamine<\/td>\n(i) Non-biodegradable<\/td>\n<\/tr>\n
(b) Acrylic<\/td>\n(ii) Biodegradable<\/td>\n<\/tr>\n
(c) Woollen items<\/td>\n(iii) Thermosetting plastic<\/td>\n<\/tr>\n
(d) Metal cans<\/td>\n(iv) Thermoplastic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\nAnswer<\/span><\/summary>\n\n\n\n\n\n\n\n
Column-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n
(a) Melamine<\/td>\n(iii) Thermosetting plastic<\/td>\n<\/tr>\n
(b) Acrylic<\/td>\n(iv) Thermoplastic<\/td>\n<\/tr>\n
(c) Woollen items<\/td>\n(ii) Biodegradable<\/td>\n<\/tr>\n
(d) Metal cans<\/td>\n(i) Non-biodegradable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n
\n

State whether the following statements are True or False:<\/span><\/p>\n

Question 1.
\nPolyester fibres are used for making hand knit sweaters.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 2.
\nRayon is made from cellulose obtained from wood pulp.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 3.
\nPlastics are man-made materials.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 4.
\nA long chain like molecule consisting of a large number of simple small molecules joined to each other by chemical bonds is called polymer.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 5.
\nSilk fibre is obtained from cocoons of the silk moth.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 6.
\nAcrylic fibres bums with a sooty flame and shrinks to form black beads.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 7.
\nWool is a natural fibre obtained from plants.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 8.
\nPlastics are non-biodegradable.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 9.
\nWe should wear synthetic clothes while working in the kitchen or in a laboratory.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 10.
\nNylon fibre is used for making nylon parachutes and ropes for rock climbing.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 11.
\nCotton clothes are more comfortable during hot\/humid weather.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 12.
\nPolyester is a synthetic fibrous material.<\/p>\n

\nAnswer<\/span><\/summary>\n

True<\/p>\n<\/details>\n

\n

Question 13.
\nPlastic is environmental friendly.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 14.
\nThermoplastics is used for making handles of pressure cooker.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Question 15.
\nPlastic reacts with air and water.<\/p>\n

\nAnswer<\/span><\/summary>\n

False<\/p>\n<\/details>\n

\n

Fill in the blanks:<\/span><\/p>\n

Question 1.
\nPlastics which gets deformed easily on heating and can be bent easily are known as …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

thermoplastics<\/p>\n<\/details>\n

\n

Question 2.
\nSynthetic fibres do not absorb …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

water<\/p>\n<\/details>\n

\n

Question 3.
\nA material which is not easily decomposed by natural processes is termed as …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

non-biodegradable<\/p>\n<\/details>\n

\n

Question 4.
\nThe simplest molecule of a polymer is called ………………….<\/p>\n

\nAnswer<\/span><\/summary>\n

monomer<\/p>\n<\/details>\n

\n

Question 5.
\n………………… has anti-stick property and used as a coating on the surface of frying pan.<\/p>\n

\nAnswer<\/span><\/summary>\n

Teflon<\/p>\n<\/details>\n

\n

Question 6.
\nA material which gets decomposed through natural processes, such as action by bacteria, is called ………………….<\/p>\n

\nAnswer<\/span><\/summary>\n

biodegradable<\/p>\n<\/details>\n

\n

Question 7.
\n………………… is used for making ploythene bags.<\/p>\n

\nAnswer<\/span><\/summary>\n

Polythene<\/p>\n<\/details>\n

\n

Question 8.
\nThe 4-R principle is (a) ……………… (b) ……………. (c) ……………….. (d) ……………..<\/p>\n

\nAnswer<\/span><\/summary>\n

(a) Reduce
\n(b) Reuse
\n(b) Recycle
\n(d) Recover<\/p>\n<\/details>\n

\n

Question 9.
\nThe plastics which when moulded once, can not be softened by heating are called …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

ther mosetting plastics<\/p>\n<\/details>\n

\n

Question 10.
\nNylon was prepared from ……………………., ………………… and ……………………<\/p>\n

\nAnswer<\/span><\/summary>\n

coal, water, air.<\/p>\n<\/details>\n

\n

Question 11.
\nPolyester is made up of the repeating units of a chemical called …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

ester<\/p>\n<\/details>\n

\n

Question 12.
\nEster have a ………………… smell.<\/p>\n

\nAnswer<\/span><\/summary>\n

fruity<\/p>\n<\/details>\n

\n

Question 13.
\nPolywool is a mixture of ………………… and wool.<\/p>\n

\nAnswer<\/span><\/summary>\n

polyester<\/p>\n<\/details>\n

\n

Question\u00a0 14.
\n………………… fibre resembles wool.<\/p>\n

\nAnswer<\/span><\/summary>\n

Acrylic<\/p>\n<\/details>\n

\n

Question 15.
\nWe should wear ………………… clothes in the kitchen.<\/p>\n

\nAnswer<\/span><\/summary>\n

cotton<\/p>\n<\/details>\n

\n

Question 16.
\nSynthetic fibres are synthesised from raw material called …………………<\/p>\n

\nAnswer<\/span><\/summary>\n

petrochemicals<\/p>\n<\/details>\n

\n

Question 17.
\nOn burning, plastics release ………………… gases.<\/p>\n

\nAnswer<\/span><\/summary>\n

poisonous<\/p>\n<\/details>\n

\n

Question 18.
\n………………… fabrics do not wrinkle easily.<\/p>\n

\nAnswer<\/span><\/summary>\n

Polyester<\/p>\n<\/details>\n

\n

Question 19.
\nElectric plugs are made up ………………… plastics.<\/p>\n

\nAnswer<\/span><\/summary>\n

ther mosetting<\/p>\n<\/details>\n

\n

Question 20.
\nSynthetic fibres are also called ………………… fibres.<\/p>\n

\nAnswer<\/span><\/summary>\n

man-made<\/p>\n<\/details>\n

\n

Hope the information shared regarding the NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download is true and genuine as far as our knowledge is concerned. If you feel any information regarding CBSE Class 8 Science Synthetic Fibres and Plastics MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly.<\/p>\n","protected":false},"excerpt":{"rendered":"

Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download is available here. MCQ Questions for Class 8 Science with Answers are prepared as per the Latest Exam Pattern. Students can solve these Synthetic Fibres and Plastics Class 8 MCQs Questions …<\/p>\n

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