Question

Which one of the following sets of phenomena would increase on raising the temperature?

(a) Diffusion, evaporation, compression of gases
(b) Evaporation, compression of gases, solubility
(c) Evaporation, diffusion, expansion of gases
(d) Evaporation, solubility, diffusion, compression of gases

NCERT Class IX
Sciences - Exemplar Problems

Chapter 1. Matter in our Surroundings

Answer 1

(c) Evaporation, diffusion, expansion of gases is the answer.

Answer 2

Answer: Option (c) is the correct answer.

Explanation:

When we increase the temperature then there will be increase in kinetic energy of molecules of a substance. As a result, rate of collision between the particles will increase.

Evaporation means conversion of liquid state into vapor state. Diffusion refers to the spreading of gas molecules.

Hence, we can conclude that on raising the temperature there will be an increase in evaporation, diffusion, expansion of gases.