Synthetic Fibres and Plastics-Plastics (CBSE Class-8 Science): Questions 1 - 6 of 6

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Question number: 1

» Synthetic Fibres and Plastics » Plastics » Thermosetting Plastics

MCQ▾

Question

Name one versatile material

Choices

Choice (4) Response

a.

Melamine

b.

Only a

c.

a and b

d.

Bakelite

Question number: 2

» Synthetic Fibres and Plastics » Plastics » Thermoplastics

MCQ▾

Question

Examples of thermoplastic material are

Choices

Choice (4) Response

a.

Nylon, Polythene

b.

PVC, PTFE

c.

Bakelite

d.

Both a. and b. are correct

Question number: 3

» Synthetic Fibres and Plastics » Plastics » Thermosetting Plastics

MCQ▾

Question

Plastics whose shape cannot be changed even by heating are:

Choices

Choice (4) Response

a.

Thermoplastic

b.

a and b

c.

Thermosetting

d.

Polythene

Question number: 4

» Synthetic Fibres and Plastics » Plastics » Thermoplastics

MCQ▾

Question

The plastic which can be moulded is

Choices

Choice (4) Response

a.

Thermosetting

b.

Polythene

c.

None

d.

Thermoplastic

Question number: 5

» Synthetic Fibres and Plastics » Plastics » Thermosetting Plastics

MCQ▾

Question

Bakelite is an example of:

Choices

Choice (4) Response

a.

a and b

b.

Thermosetting plastics

c.

Thermoplastic plastics

d.

Polythene

Question number: 6

» Synthetic Fibres and Plastics » Plastics » Thermoplastics

MCQ▾

Question

What are the characteristics of thermoplastic?

Choices

Choice (4) Response

a.

They soften on warming.

b.

They stretch easily.

c.

They are flexible.

d.

All a. , b. and c. are correct

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