Question

A. Multiple choice questions.
1. What are most plastics made from?
c) Wood
b) Crude oil
a) Natural gas
d) None of these
2. Which of the following is a natural material?
a) Wood
b) Bakelite
c) Nylon
d) Polyester
3. Which of the following is an example of thermosetting plastics?
b) Polythene
c) PVC
d) Bakelite
a) Nylon
4. Which of the following synthetic fibres has a feel similar to wool?
a) Nylon
c) AcrylicC
b) Polyester
d) Rayon
5. Which of the following is not a synthetic fibre?
b) Orlon
a) Polyester
c) Nylon
d) Linen
6. Which of the following is called artificial silk?
d) Acrylic
b) Rayon
c) Nylon
a) Polyester
7. Rayon is different from synthetic fibres because
a) It is obtained from wood pulp
b) it has a silk like appreance
b) Its fibres can also be woven like those of natural fibres
c) It can be dyed in a wide variety of colours.
8. A polymer is a large molecule composed of many repeated units. What is a polyester
composed of?
c)Amino acid
a) Ether
b) Cellulose
d)
ester
9. Which of the following material is a mixture of two fibres?
d) Nylon
a) Jute
b) Polywool
c) Polyester
10.Identify the synthetic fibres which resembles wool.
c)Nylon
a) Rayon
b) Terylen
d) Acryli​

Answer 1

Answer:

1.a 2.b 3.c 4.d 5.b 6.c 7.a 8.d 9.a 10.b

Explanation:

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