NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1987 - 1994 of 2028

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Question number: 1987

» Chemistry » Pollution of Air and Water

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Question

Which of the following can cause water pollution if the farmer use in excess in fields?

Choices

Choice (4) Response

a.

Manures and water

b.

Fertilizers and pesticides

c.

Seeds and fertilizers

d.

Pesticides and seeds

Question number: 1988

» Chemistry » Pollution of Air and Water

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Question

Which of the following can be dissolve rapidly in haemoglobin of blood than oxygen?

Choices

Choice (4) Response

a.

Nitrous oxide

b.

Carbon monoxide

c.

Ozone

d.

Sulphur dioxide

Question number: 1989

» Chemistry » Pollution of Air and Water

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Question

The of acid rain water less than?

Choices

Choice (4) Response

a.

3.1

b.

5

c.

1.2

d.

6

Question number: 1990

» Chemistry » Synthetic Fibers and Plastics

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Question

Which of the following is known as “Styron”?

Choices

Choice (4) Response

a.

Polyethylene

b.

Polystyrene

c.

Teflon

d.

Polypropylene

Question number: 1991

» Chemistry » Pollution of Air and Water

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Question

Smog consists of?

Choices

Choice (4) Response

a.

Water and smoke

b.

Air and water

c.

Water & fire

d.

Smoke & fog

Question number: 1992

» Chemistry » Synthetic Fibers and Plastics

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Question

Which of the following products can’t be decomposed easily?

Choices

Choice (4) Response

a.

Polyethene

b.

Acrylic

c.

Plastic

d.

All a. , b. and c. are correct

Question number: 1993

» Chemistry » Synthetic Fibers and Plastics

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Question

Which of the following type of nylon is known as “Perlon-L”?

Choices

Choice (4) Response

a.

Nylon-6,6

b.

Nylon-6

c.

Nylon-5

d.

None of the above

Question number: 1994

» Chemistry » Synthetic Fibers and Plastics

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Question

Which of the following part of sheep is used to produce wool?

Choices

Choice (4) Response

a.

Fleece

b.

Skin

c.

Toes

d.

Question does not provide sufficient data or is vague

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