Question

Choose the correct answer.
1. Which of the following is called artificial silk?
a. Nylon
b. Polyester
C. Rayon
D.Acrylic

2. Which of the following is semi-synthetic?
a. Nylon
b. Polyester
c. Rayon
d. Acrylic

3. Which among the following is a thermosetting plastic?
a. Polythene
b. Teflon
c.Melamine
d. PVC

4. Which of the following is used in making electric fittings?
a.Melamine
b. Teflon
c. Perspex
d. Bakelite

B. Match the correct answer.
a. Polystyrene
b. Bakelite
c. PVC
d. Perspex
e. PTFE
i. most chemically inert
ii. tough and good insulator
iii. easily moulded
iv. good electrical insulator
v. transparent like glass

C. Very short answer questions.
1. Thermocol is obtained from which plastic?
2. Name the synthetic fibre used for making ropes.
3. Mention the main use of Teflon.
4. Name the raw material from which rayon is obtained.
5. Give full form of PET.​

Answer 1

Answer:

1.Rayon

2.Rayon

3.PVC

4. Sorry