Question

Tick the correct option.
_______________________

1. Which of the following is not a thermoplastics?
a. Polythene
b. Polystyrene
c. Teflon
d. Bakelite

2. Which of the following is false about plastics?
a. Soluble in water
b. Inflammable
c. Bad conductor of heat
d. Bad conductor of electricity

3. Terrycot is a/an
a. natural fibre
b. artificial fibre c. blended fibre
d. artificial and blended fibre

4. Which of the following plastics cannot be remoulded?
a. Teflon
b. PVC
c. Polythene
d. Melamine

5. The synthetic fibre which resembles silk in texture is
a. rayon
b. nylon
c. polyester
d. acrylic

6. Which of the following is false about rayon?
a. It is obtained from wood pulp.
b. It has a silk-like appearance.
c. It is more expensive than silk.
d. Its fibres can be woven like those of natural fibres.

7. Which of the following thermoplastics is also used as a substitute for glass?
a. Polystyrene
b. Perspex
c. PVC
d. Teflon

8. Which of the following is also called thermocole?
a. Polythene
b. Polystyrene
c. Melamine
d. Teflon​

Answer 1

Answer:

melamine, soluble in water, d , melamine, rayon, pet, polystyrene

Answer 2

Answer:

Bakelite

Soluble in water

Artificial fibre

Melamine

Rayon

C

Polyester

Polethene