NECO Past Questions and Answers - Page 193

961.

Which of the following is a non-renewable energy source?

A.

Coal

B.

Hydro

C.

Ocean waves

D.

Solar

E.

Tides

View answer & explanation

Correct answer is A

Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas

962.

The escape velocity of an object from the gravitational field of a planet

I. Increases with the mass of the object
II. Increases with the mass of the planet
III. Is smaller on the moon than on the earth. Which of the above statements is/are correct?

A.

I only

B.

II only

C.

I and II only

D.

II and III only

E.

I, II and III

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

963.

The mercury column in a simple mercury barometer is of height 5m above the mercury in a reservoir. If the tube is replaced with one whose radius is twice that of the first tube, what will be the height of the mercury column in the new tube?

A.

2.5m

B.

5.0m

C.

7.5m

D.

10.0m

E.

20.0m

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

964.

Calculate the peak voltage that could be obtained from a 220 V\(_{r.m.s}\)main supply.

A.

70.7V

B.

110.0V

C.

155.6V

D.

311.1V

E.

440.0V

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

965.

Which of the following pairs is an example of translucent bodies?

A.

Cardboard and moon

B.

Clear water and glass

C.

Frosted glass and waxed paper

D.

Oiled paper and brick

E.

Wood and metal sheet

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

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