Synthetic Fibres and Plastics-Plastics [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 6 of 6

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Question 1

Question MCQ▾

Name one versatile material

Choices

Choice (4)Response

a.

Only a

b.

a and b

c.

Melamine

d.

Bakelite

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Question 2

Question MCQ▾

Examples of thermoplastic material are

Choices

Choice (4)Response

a.

Nylon, Polythene

b.

PVC, PTFE

c.

Bakelite

d.

Both a. and b. are correct

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Question 3

Question MCQ▾

Plastics whose shape cannot be changed even by heating are:

Choices

Choice (4)Response

a.

Polythene

b.

Thermoplastic

c.

a and b

d.

Thermosetting

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Question 4

Question MCQ▾

The plastic which can be moulded is

Choices

Choice (4)Response

a.

None

b.

Polythene

c.

Thermoplastic

d.

Thermosetting

Edit

Question 5

Question MCQ▾

Bakelite is an example of:

Choices

Choice (4)Response

a.

a and b

b.

Thermoplastic plastics

c.

Thermosetting plastics

d.

Polythene

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Question 6

Question MCQ▾

What are the characteristics of thermoplastic?

Choices

Choice (4)Response

a.

They are flexible.

b.

They soften on warming.

c.

They stretch easily.

d.

All a., b. and c. are correct

Edit