The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion ie \(\alpha =\frac { 1 }{ V } { \left( \frac { \partial V }{ \partial T } \right) }_{ P }\) For an ideal gas a is equal to ___________

(a)

T

(b)

1/T

(c)

P

(d)

none of these

Maximum deviation from ideal gas is expected from ______________

(a)

CH₄(g)

(b)

NH₃ (g)

(c)

H₂ (g)

(d)

N₂ (g)

Assertion: Critical temperature of CO₂ is 304K, it can be liquefied above 304K.
Reason : For a given mass of gas, volume is to directly proportional to pressure at constant temperature

(a)

both assertion and reason are true and reason is the correct explanation of assertion

(b)

both assertion and reason are true but reason is not the correct explanation of assertion

(c)

assertion is true but reason is false

(d)

both assertion and reason are false

Which of the following diagrams correctly describes the behaviour of a fixed mass of an ideal gas? (T is measured in K)

(a)

(b)

(c)

(d)

All of these

In a closed room of 1000 m³ a perfume bottle is opened up. The room develops smell. This is due to which property of gases _____________

(a)

Viscosity

(b)

Density

(c)

Diffusion

(d)

None