NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1295 - 1300 of 1484

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Question 1295

Question

MCQ▾

Which of the following problems associated with the use of coal?

Choices

Choice (4)Response

a.

Acid drainage from coal mine

b.

Burning of coal released sulfur dioxide

c.

Expensive and dangerous to mine

d.

All a., b. and c. are correct

Question 1296

Question

MCQ▾

Which of the following factors affect the speed of the rotation of coil in DC electric motor?

Choices

Choice (4)Response

a.

The magnitude of magnetic field

b.

The magnitude of current

c.

Number of turns of coil

d.

All a., b. and c. are correct

Question 1297

Question

MCQ▾

The lid of the solar cooker is made up of:

Choices

Choice (4)Response

a.

Black sheet

b.

Glass

c.

Plastic sheet

d.

Plane mirror

Question 1298

Question

MCQ▾

Which of the following device converts solar energy directly into electricity?

Choices

Choice (4)Response

a.

Generator

b.

Solar cooker

c.

Solar cell

d.

Question does not provide sufficient data or is vague

Question 1299

Question

MCQ▾

Ocean thermal energy is due to

Choices

Choice (4)Response

a.

Temperature difference at different levels in the ocean

b.

Pressure difference at different levels in the ocean

c.

All of the above

d.

None of the above

Question 1300

Question

MCQ▾

Which are following products contain ozone depleting substances?

I. Pesticides

II. Refrigerator

III. Car with AC

IV. Motorbike

Which of the following are correct?

Choices

Choice (4)Response

a.

II and III only

b.

I, II and III only

c.

II, III and IV only

d.

I, II, III and IV only

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