Question

The main reason for deviation of gases from ideal behaviour is few assumptions of kinetic theory. These are
(i) there is no force of attraction between the molecules of a gas
(ii) volume of the molecules of a gas is negligibly small in comparison to the volume of the gas
(iii) Particles of a gas are always in constant random motion.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i), (ii) and (iii)
• D. (iii) only

Answer 1

The correct option is A (i) and (ii)

The main reasons for deviation of gases from ideal behavior is few assumptions of Kinetic theory, they are-

$⟹$ The kinetic theory of gases assume that gas molecules are point particles without any volume and any force acting between them; so that their collisions could be treated as perfectly elastic.

$⟹$ But in reality, neither can one assure gas molecules to be with nil volume nor free from a mild attractive force.