According to Zeroth law of thermodynamics, the physical quantity which is same for two bodies in thermal equilibrium is

If a refrigerator of coefficient of performance of 5 has a freezer at a temperature of $-13^{\circ} \mathrm{C}$, then the room temperature is

From the figure shown for a thermodynamic system, match the curves with their respective thermodynamic processes.

( $p=$ Pressure and $V=$ volume )

$$ \begin{array}{llll} \hline & \text { Curve } & & \text { Process } \\ \hline \text { (i) } & \text { I } & \text { A } & \text { Adiabatic } \\ \hline \text { (ii) } & \text { II } & \text { B } & \text { Isobaric } \\ \hline \text { (iii) } & \text { III } & \text { C } & \text { Isochoric } \\ \hline \text { (iv) } & \text { IV } & \text { D } & \text { Isothermal } \\ \hline \end{array} $$

If 2 moles of an ideal monoatomic gas at a temperature of $27^{\circ} \mathrm{C}$ is mixed with 4 moles of another ideal monoatomic gas at a temperature of $327^{\circ} \mathrm{C}$, then the temperature of mixture of the two gases is