NECO Past Questions and Answers - Page 222

1,106.

The following are the main problems of distribution of essential commodities in Nigeria EXCEPT

A.

Excessive demand

B.

Hoarding of goods

C.

Long chain of distribution

D.

Poor storage facilities

E.

Poor transportation network

Correct answer is A

No explanation has been provided for this answer.

1,107.

When total utility is at maximum, then marginal utility is

A.

Decreasing

B.

Increasing

C.

Maximum

D.

Negative

E.

Zero

Correct answer is E

No explanation has been provided for this answer.

1,108.

A body is launched from the earth’s surface, of radius R, so that it just escapes from the gravitational influence of the earth; If the gravitational constant is G and the mass of the earth is M, what is the escape velocity of the boby.

A.

\(\sqrt{2GM}\) รท R

B.

\(\frac{\sqrt{2GM}}{R}\)

C.

\(\frac{\sqrt{2G}}{MR}\)

D.

\(\sqrt{2GMR}\)

E.

\(\frac{\sqrt{R}}{2GM}\)

Correct answer is B

No explanation has been provided for this answer.

1,109.

The area under the curve of a velocity time graph represents

A.

acceleration

B.

distance covered

C.

instantaneous speed

D.

time taken

E.

work done

Correct answer is B

No explanation has been provided for this answer.

1,110.

The mode of transference of heat which does not require any material medium is

A.

conduction

B.

convection

C.

evaporation

D.

radiation

E.

transmission

Correct answer is D

Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.