WAEC Past Questions and Answers - Page 4103

20,513.

Palm oil from a bottle flows out more easily after it as been heated because the

A.

molecules are given potential energy during the heating

B.

friction between oil layers is reduced

C.

oil molecules force each other out

D.

adhesion between the oil molecules and those of the bottle is increased

Correct answer is B

No explanation has been provided for this answer.

20,514.

A net force of magnitude 0.6N acts on a body of mass 40g, initially at rest. Calculate the magnitude of tire resulting acceleration.

A.

90ms-2

B.

60ms-2

C.

30ms-2

D.

15ms-2.

Correct answer is D

No explanation has been provided for this answer.

20,515.

The force between molecules of the same substance is termed

A.

elastic force

B.

repulsive force

C.

cohesive force

D.

adhesive force

Correct answer is C

No explanation has been provided for this answer.