During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio ${C_p}/{C_v}$ for the gas is

The $P-V$ diagram of $2\,g$ of helium gas for a certain process $A\to B$ is shown in the figure. What is the heat given to the gas during the process $A \to B$?

When a system is taken from thermodynamic state $i$ to $f$ along the path $iaf$ (see figure), it is found that the heat $Q$ absorbed by the system is $50\ cal$ and work $W$ done by the system is equal to $20\ cal$ . Along the path ibf $Q = 36\ cal$ . What is $W$ along the path ibf?  ........... $\mathrm{cal}$

Six moles of an ideal gas perfoms cycle shown in figure. If the temperature $T_A = 600\, K$, $T_B = 800\, K, T_C = 2200\, K$ and $T_D = 1200\, K$, the work done per cycle is........ $kJ$

Which of the following graphs correctly represents the variation of $\beta  =  - \left( {\frac{{dV}}{{dP}}} \right)/V$ with $P$ for an ideal gas at constant temperature ?

Which one of the following gases possesses the largest internal energy