A closed vessel contains equal number of oxygen and hydrogen molecules. Consider the following statements:

1. The average speed of hydrogen molecules is greater.

2. The two gases have different average energies.

3. Hydrogen molecules strike the walls more often.

4. Weight of hydrogen is $\frac{1}{8}$th of the weight of oxygen.

Wrong statements are –

(A) 1 and 2                       

(B) 2 and 3

(C) 1 and 3                       

(D) 2 and 4

Pressure versus volume graph for a real gas and an ideal gas is shown below: 

The correct statement among the following is -

1. Real gases show a large deviation from ideal behaviour at low pressure.

2. Real gases show a very small deviation from ideal behaviour at low pressure.

3. Real gases do not behave ideally under any conditions at low pressure.

4. None of the above statements is correct

A plot of pressure versus $\frac{1}{\mathrm{V}}$ for a gas at constant temperature is given below:

The relation between ${\mathrm{T}}_1, {\mathrm{T}}_2, \mathrm{and} {\mathrm{T}}_3$ is- 

 $1. {\mathrm{T}}_1>{\mathrm{T}}_2>{\mathrm{T}}_3$
$2. {\mathrm{T}}_1<{\mathrm{T}}_2<{\mathrm{T}}_3$
$3. {\mathrm{T}}_1>{\mathrm{T}}_2<{\mathrm{T}}_3$
$4. \mathrm{None} \mathrm{of} \mathrm{the} \mathrm{above}$