NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1972 - 1978 of 2028

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Question number: 1972

» Chemistry » Pollution of Air and Water

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MCQ▾

Question

Which one of the following include the modes of controlling pollution in large cities?

Choices

Choice (4) Response

a.

Less use of insecticides & fertilizers

b.

Proper disposal of organic wastes

c.

Shifting of industries out of the residential area

d.

All a. , b. and c. are correct

Question number: 1973

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Which of the following is a biodegradable polymer?

Choices

Choice (4) Response

a.

Nylon

b.

Polythene

c.

PVC

d.

Cellulose

Question number: 1974

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Nylon in obtained from

Choices

Choice (4) Response

a.

Air

b.

Coal

c.

Water

d.

None of the above

Question number: 1975

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Select the product which is made from coconut fibres?

Choices

Choice (4) Response

a.

Mattresses

b.

Sweaters

c.

Shoes

d.

Sarees

Question number: 1976

» Chemistry » Pollution of Air and Water

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MCQ▾

Question

Photo-chemical oxidant such as PAN or PBN are formed?

Choices

Choice (4) Response

a.

By action of nitrogen oxides on hydrocarbons is presence of sunlight

b.

By action of hydrogen sulphide on hydrocarbons in presence of sunlight

c.

By action of on hydrocarbons in presence of sunlight

d.

None of the above

Question number: 1977

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Now a days plastics are extensively using because?

Choices

Choice (4) Response

a.

Plastic has a linear arrangement of units

b.

It is synthetic

c.

Plastic is a polymer

d.

It is cosily mouldable

Question number: 1978

» Chemistry » Synthetic Fibers and Plastics

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MCQ▾

Question

Which of the following are condensation polymers?

Choices

Choice (4) Response

a.

Melamine

b.

Alkyl resin (or) Glyptol

c.

Terylene

d.

All a. , b. and c. are correct

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