Question

Which of the option given below is not correct?

• A. Gases diffuse very fast into other gases.
• B. Gas particles move faster at high temperature.
• C. Gases occupy far more space than solids and liquids.
• D. Gases are highly rigid.

Answer 1

The correct option is D

Gases are highly rigid.

Gases are highly compressible and have highest diffusivity. As gases do not possess definite shape i.e. they are not rigid. So gases are highly rigid: is incorrect.

Diffusion depends on free space or intermolecular distance. Since gases have maximum free space, they can diffuse easily into other gases.

The particles of matter move faster at higher temperature, because the kinetic energy of the particles increases with temperature.

Gases occupy far more space than solids and liquids:is also correct because of weak intermolecular space the gas molecules are at larger distance from each other and hence occupy larger space than gases and liquids.