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Worksheets

8th CDF-02 CBSE

Total questions: 14

Worksheet time: 7mins

Name
Class
Date
1.

___________ are water resistant.

a)

Natural fibres

b)

Synthetic fibres

c)

Both Natural and synthetic fibres

d)

None of above

2.

____________ has the highest water absorbing capacity.

a)

Cotton

b)

Jute

c)

Rayon

d)

Nylon

3.

_____________ is a versatile synthetic material and it is a polymer.

a)

Plastic

b)

Cotton

c)

Jute

d)

Rayon

4.

Plastic that can be easily bent with the effect of heat are called _____________

a)

Thermoplastics

b)

Thermosetting plastics

c)

Rayon

d)

None of above

5.

Plastics that once moulded cannot be softened by heating are called __________

a)

Thermoplastics

b)

Thermosetting plastics

c)

Nylon

d)

None

6.

_______ is non-reactive, light, strong, durable and poor conductor of heat and electricity

a)

Jute

b)

Cotton

c)

Plastic

d)

Rayon

7.

____________ has the highest capacity of heat resistance.

a)

PVC

b)

Nylon

c)

Bakelite

d)

Melamine

8.

__________ is used for making handles of utensils and most electrical fittings.

a)

PVC

b)

Melamine

c)

Bakelite

d)

Polythene

9.

Most common polystyrene is __________

a)

Terylene

b)

Thermocol

c)

Teflon

d)

Bakelite

10.

_________ is popular polyester.

a)

Terylene

b)

Thermocol

c)

Teflon

d)

Bakelite

11.

_________ is used for non coating of utensils.

a)

Terylene

b)

Thermocol

c)

Teflon

d)

Bakelite

12.

5R principles: - Reduce, Reuse, Recycle, Recover and ________

a)

Restore

b)

Refuse

c)

Refund

d)

None of above

13.

PVC and polythene are example of ____________

a)

Teflon

b)

Thermosetting plastics

c)

Thermoplastics

d)

None

14.

Bakelite and Melamine are examples of _______________

a)

Thermoplastics

b)

Thermosetting plastics

c)

Polyester

d)

None