Thursday, May 2, 2013

CBSE Class 8 - Science - Ch3 - Synthetic Fibres and Fabrics (MCQs)

Synthetic Fibres and Fabrics
Plastics: An Artificial Fibre
image credits:clker.com

MCQs

Q1: The fibres that are obtained from cotton, jute and silk are known as ...

(a) Man made or synthetic fibres
(b) Natural fibres
(c) Artificial fibres
(d) Plastics


Q2: The fibres that are made by human beings are called...

(a) Man-made or synthetic fibres
(b) Natural fibres
(c) Artificial fibres
(d) Plastic


Q3: The natural fibres are made from simple molecule that is known as ...

(a) Polymer
(b) Monomer
(c) Plastics
(d) Cellulose




Q4: The process by which artificial fibres are made from simple molecules is called?

(a) Monomer
(b) Polymer
(c) Polymerization
(d) Thermosetting



Q5: Which fibre is also known as regenerated fibre?

(a) Plastic
(b) Polymer
(c) Rayon
(d) Acrylon


Q6: Parachutes are made from which fibre?

(a) Nylon
(b) Terylene
(c) Plastic
(d) Rayon


Q7: Terylene is a popular form of?

(a) Nylon
(b) Plastic
(c) Monomer
(d) Polyester



Q8: What is PET?

(a) Polyester
(b) Polyester and Terylene
(c) Poly Ethene Tetraphthalate
(d) Poly Ethene Terylene



Q9: The plastics in which monomers are arranged in a straight chain are known as ...

(a)  Thermoplastics
(b)  Thermosetting plastics
(c)   PET
(d)   Polythene


Q10: The fibres which resemble wool are known as ...

(a)  Terylene
(b)  Acrylon
(c)  Polyester
(d)  Nylon



Answer:
1: (b) Natural fibres
2: (a) Man-made or synthetic fibres
3: (b) Monomer
4: (c) Polymerization
5: (c) Rayon
6: (a) Nylon
7: (d) Polyester
8: (c) Poly Ethene Tetraphthalate
9: (a)  Thermoplastics
10: (b)  Acrylon




10 comments:

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  4. Q.8 answer is wrong it is actually polyethylene terephtalate

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  5. This comment has been removed by the author.

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