Question

The volume occupied by a molecule of a gas is .......... in comparison with the volume of the container.
(A) more
(B) negligible
(C) much more
(D) double

Answer 1

answer : option (b) negligible

explanation : This statement is based on kinetic theory of gases.

according to kinetic theory of gases

• The volume occupied by a molecule of a gas is negligible in comparison with the volume of the container.
• The molecules are in constant linear motion.
• No energy gain or lost when molecules collide.
• shape of all molecules are identical and spherical. etc...

from above explanation, it is clear that option (B) is correct choice.

[note : kinetic theory of gases is applicable only in ideal condition. in real condition, size of molecule is considered that's why gas equation converted into $\left(P-\frac{an^2}{V^2}\right)(V-nb)=nRT$ for real gas. ]