Sign up for FREE

Synthetic fibres class 8

Last updated about 5 years ago

17 questions

1

1

1

1

1

1

1

1

1

1

1

3

2

1

1

1

1

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Name the plastic which is coated on uniforms of firemen to make them fire resistant.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Write 3 positive characteristics of plastics.

Question 13

13.

Write 2 disadvantages of synthetic fibres.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Name the unit used in the formation of a polymer.

Priya found that woollen blankets were expensive as they were mae of natural fibres. She wanted a blanket which was similar to woollen blanket, but is cheaper. She can buy a blanket made of ____________  fibre.

Silk

Nylon

Acrylic

Cotton

Terylene is popular form of

Nylon

Plastic

Rayon

Polyester

Which of the following represents the correct match for items in Column A with those in Column B?

a

b

c

d

a

b

c

d

nylon 

rayon

terylene 

acrylic

Which of the following plastic objects can be recycled?
A. Electric Socket     B. Polythene Bag       C.PVC Pipe           D. Ashtray

A & B

B & C

A & D

C & D

Which of the following has cross linked polymer chains?

bakelite

polyester

PVC

nylon

The clothes of a person working in the kitchen catch fire accidently causing severe burns. The person is most likely wearing clothes made of:

flax

rayon

terylene

cotton

a

b

c

d

Which of the following is biodegradable?

Polythene bag

Aluminium

Paper Bag

Tin

The fabric terywool is obtained by mixing terylene and wool.

True

False

Synthetic fibre is a chemical substance  of single unit.

True

False