NECO Past Questions and Answers - Page 164

816.

The relative density of a liquid is the ratio of the

A.

Mass of water to the mass of an equal volume of liquid

B.

Upthrust in the liquid to the upthrust in water

C.

Density of water to the density of the liquid

D.

Upthrust in water to the upthrust in the liquid

Correct answer is B

No explanation has been provided for this answer.

817.

Which of these factors causes a change in the quantity demanded of a commodity?

A.

Income

B.

Population

C.

Price of other commodities

D.

Price of the commodity concerned

E.

Taste and fashion

Correct answer is D

No explanation has been provided for this answer.

818.

Which of the following waves is both transverse and mechanical?

A.

Water waves

B.

Radio waves

C.

Sound waves

D.

X-rays

Correct answer is A

No explanation has been provided for this answer.

819.

The value of money is affected by

A.

Consumer’s income

B.

Effective demand

C.

Effective supply

D.

Equilibrium price

E.

General price level

Correct answer is E

No explanation has been provided for this answer.

820.

The mean of the following scores

30, 32, 34, 36, 38, 40 and 42

What is the mean deviation?

A.

4.21

B.

3.24

C.

3.42

D.

4.54

Correct answer is C

No explanation has been provided for this answer.