Unsaturated and saturated vapours - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1998

A vapour is said to be saturated when

A. More molecules return to the liquid than the amount that left it
B. A dynamic equilibrium exists between the molecules of the liquid and the vapour molecules at a given temperature
C. The vapour pressure is equal to the atmospheric pressure
D. All molecules are moving with the same speed in all directions at a given temperature

Question 7:

• JAMB 2010

A vapour is said to be saturated when

A. A dynamic equilibrium exists between liquid molecules and the vapour molecules
B. A dynamic aquilibrium exists such that more molecules return to the liquid than are living it
C. The temperature of the vapour varies
D. The vapour pressure is atmospheric

Question 8:

• JAMB 2010

A vapour is said to be saturated when

A. A dynamic equilibrium exists between liquid molecules and the vapour molecules
B. A dynamic aquilibrium exists such that more molecules return to the liquid than are living it
C. The temperature of the vapour varies
D. The vapour pressure is atmospheric

Question 9:

• JAMB 2016

Vapour is said to be saturated on top of an enclosed liquid if _________

A. The rate of condensation is greater than that of vapourization
B. The rate of condensation is equal to that of vapourization
C. There is neither condensation nor vaporization of the liquid
D. The rate of condensation is less that that of vaporization