Synthetic Fibres and Plastics (CBSE Class-8 Science): Questions 1 - 8 of 21

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Question number: 1

» Synthetic Fibres and Plastics » Plastics and Environment » Non-Biodegradable Property of Plastics

MCQ▾

Question

Plastics are:

Choices

Choice (4) Response
a.

Biodegradable

b.

Non-biodegradable

c. None of the above
d. Question does not provide sufficient data or is vague

Question number: 2

» Synthetic Fibres and Plastics » Types of Synthetic Fibres » Rayon

MCQ▾

Question

Rayon is called regenerated fibre because:

Choices

Choice (4) Response
a.

its formation is the case of synthesis of cellulose

b.

its formation is a case of purification of cellulose

c.

of its shining softness and absorbing properties

d.

of the blending property of rayon

Question number: 3

» 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: 4

» 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: 5

» Synthetic Fibres and Plastics » Types of Synthetic Fibres » Polyester and Acrylic

MCQ▾

Question

Blending property of polyesters is used in the formation of:

Choices

Choice (4) Response
a.

Mixed with wool to make long lasting fabrics

b.

Aprons and caps

c.

Terrycot, Terrywool, Terrysilk etc.

d.

For making sarees.

Question number: 6

» Synthetic Fibres and Plastics » Plastics as Materials of Choice » Plastic Is Light, Strong and Durable

MCQ▾

Question

Plastic is

Choices

Choice (4) Response
a.

Strong

b.

Durable

c.

Light

d. All a. , b. and c. are correct

Question number: 7

» Synthetic Fibres and Plastics » Synthetic Fibres » Natural and Man-Made Fibres

MCQ▾

Question

Fibres obtained from plants and animals are called

Choices

Choice (4) Response
a.

Synthetic Fibres

b.

Natural Fibres

c.

Man-made Fibres

d.

Cellulose

Question number: 8

» Synthetic Fibres and Plastics » Plastics and Environment » Reduce, Reuse, Recycle and Recover

MCQ▾

Question

4R Principle is:

Choices

Choice (4) Response
a.

Recover

b.

Reduce

c.

Reuse

d. All a. , b. and c. are correct

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