NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1985 - 1992 of 2028

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Question 1985

Question

MCQ▾

The loss or reduction of chlorophyll in the leaves in termed?

Choices

Choice (4)Response

a.

Epinarty

b.

Lichen

c.

Necrosis

d.

Chlorosis

Question 1986

Question

MCQ▾

Fluorosis, is a bone disease caused by the presence of?

Choices

Choice (4)Response

a.

Pesticides in water

b.

Fluorides in water

c.

Sulphur dioxide in air

d.

Carbon monoxide in air

Question 1987

Question

MCQ▾

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 1988

Question

MCQ▾

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 1989

Question

MCQ▾

The of acid rain water less than?

Choices

Choice (4)Response

a.

3.1

b.

5

c.

1.2

d.

6

Question 1990

Question

MCQ▾

Which of the following is known as “Styron” ?

Choices

Choice (4)Response

a.

Polyethylene

b.

Polystyrene

c.

Teflon

d.

Polypropylene

Question 1991

Question

MCQ▾

Smog consists of?

Choices

Choice (4)Response

a.

Water and smoke

b.

Air and water

c.

Water & fire

d.

Smoke & fog

Question 1992

Question

MCQ▾

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

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