WAEC Past Questions and Answers - Page 3545

17,721.

The term underpopulation refers to a situation where the population is

A.

Dispersed over the country

B.

Small in relation to available resources

C.

Greater than the available resources

D.

Concentrated in a few areas

Correct answer is B

No explanation has been provided for this answer.

17,722.

One common characteristics of solids, liquids and gasses is that?

A.

all the three has fixed volume

B.

their molecule have the same size

C.

their molecules are always in motion

D.

all the three have the same inter molecular forces

Correct answer is C

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion.

17,723.

A solid weighs 45N and 15N respectively in air and water. Determine the relative density of the solid

A.

0.33

B.

0.50

C.

1.50

D.

3.00

Correct answer is C

R.d = \(\frac{\text{weight in air}}{\text{apparent loss of weight in water}} = \frac{45}{45 - 15}\)

= \(\frac{45}{30} = 1.50\)

17,724.

The market supply curve slopes upwards from left to right indicating that

A.

At a lower price more is supplied

B.

Two commodities can be supplied at the same time

C.

At a lower price, less is supplied

D.

Producers pay high taxes

Correct answer is C

No explanation has been provided for this answer.

17,725.

A reservoir is filled with a liquid of density 2000kgm-3. Calculate the depth at which the pressure in the liquid will equal to 9100Nm-2 [g = 10ms-2]

A.

0.262m

B.

0.455m

C.

0.664m

D.

0.819m

Correct answer is B

h = \(\frac{p}{eg} = \frac{9100}{2000 \times 10} = 0.455m\)