Synthetic Fibres and Plastics MCQ Questions Class 8 Science Chapter 3
NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics. Synthetic Fibres and Plastics MCQ Questions with Answers from Class 8 Science Honeysuckle.
Synthetic Fibres and Plastics MCQ Questions Class 8 Science Chapter 3
Synthetic Fibres and Plastics Multiple Choice Questions with Answers Class 8 Science Chapter 3 PDF is available.
1.) Synthetic fibres and plastics , are made of very large units called ____ ?
a) Rayon
b) Polymer
c) Nylon
Ans. b) Polymer
2.) The fibre that is obtained by chemical treatment of wool pulp and has the similar properties of silk , is called ____ ?
a) Rayon
b) Polymer
c) Nylon
Ans. a) Rayon
3.) _____ is the first fully synthetic fibre ?
a) Rayon
b) Polymer
c) Nylon
Ans. c) Nylon
4.) ____ fibre is used for making parachutes ?
a) Nylon
b) Polymer
c) Rayon
Ans. a) Nylon
5.) ____ Polyester is used for making bottles, wires ?
a) Terylene
b) PET
Ans. b) PET
6.) ____ is a mixture of polyester and cotton ?
a) Polycot
b) Polywool
Ans. a) Polycot
7.) ____ is a mixture of polyester and wool ?
a) Polycot
b) Polywool
Ans. b) Polywool
8.) ____ synthetic fibre is used to make sweaters , blankets ?
a) Rayon
b) Acrylic
c) Nylon
Ans. b) Acrylic
9.) All the synthetic fibres are prepared by using ______ chemicals ?
a) Petrochemicals
b) Ester
Ans. a) Petrochemicals
10.) _____ is an example of a plastic ?
a) Polycot
b) Polythene
Ans. b) Polythene
11.) The plastics which get deformed easily by heating and can be bent easily are known as _____ ?
a) Thermoplastics
b) Thermosetting plastics
Ans. a) Thermoplastics
12.) The plastics which when moulded once , can not be softened by heating , are called _____ ?
a) Thermoplastics
b) Thermosetting plastics
Ans. b) Thermosetting plastics
13.) _____ is a thermoplastic ?
a) Polythene
b) Bakelite
c) Melamine
Ans. a) Polythene
14.) _____ is a thermosetting plastic ?
a) Polythene
b) Bakelite
c) PVC
Ans. b) Bakelite
15.) _____ is used for making electrical switches ?
a) Melamine
b) PVC
c) Bakelite
Ans. c) Bakelite
16.) _____ is used for floor tiles ?
a) Melamine
b) PVC
c) Bakelite
Ans. a) Melamine
17.) ____ is a special plastic on which oil and water do not stick ?
a) Melamine
b) Teflon
c) Polythene
Ans. b) Teflon
18.) ____ is a fire-proof plastic ?
a) Polythene
b) PVC
c) Melamine
Ans. c) Melamine
19.) The uniforms of firemen have coating of ____ plastic to make them flame resistant ?
a) Melamine
b) PVC
c) Bakelite
Ans. a) Melamine
20.) A material which gets decomposed through natural processes , is called _____ ?
a) Biodegradable
b) Non-biodegradable
Ans. a) Biodegradable
21.) A material which is not easily decomposed by natural processes , is called _____ ?
a) Biodegradable
b) Non-biodegradable
Ans. b) Non-biodegradable
22.) _____ is biodegradable ?
a) Paper
b) Plastic bags
c) Metal cans
Ans. c) Metal cans
23.) _____ is non-biodegradable ?
a) Wood
b) Cotton cloth
c) Plastic bags
Ans. c) Plastic bags
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