Pressure versus volume graph for real gas and are shown in figure. Answer the following question on the basis of this graph.

(i) Interpret the behaviour of real gas with respect to ideal gas at low pressure.
(ii) Interpret the behaviour of real gas with respect to ideal gas at high pressure.
(iii) Mark the pressure and volume by drawing a line at the point where real gas behaves as an ideal gas.

Explanation

At low pressure, the real gas shows very small deviation from ideal behaviour because the two curves almost coincide at low pressure.