$\begin{array}{|c|c|c|c|}
\hline & \text{List I} & & \text{List II} \\
\hline \text{A} & \begin{array}{l}\text{Zeroth law of} \\
\text{thermodynamics}\end{array} & 1 & \begin{array}{l}\text{Direction of flow of} \\
\text{heat}\end{array} \\
\hline \text{B} & \begin{array}{l}\text{First law of} \\
\text{thermodynamics}\end{array} & \text{II} & \text{Work done is zero} \\
\hline \text{C} & \text{Free expansion of a gas} & \text{III} & \text{Thermal equilibrium} \\
\hline \text{D} & \begin{array}{l}\text{Second law of} \\
\text{Thermodynamics}\end{array} & \text{IV} & \begin{array}{l}\text{Law of conservation} \\
\text{of energy}\end{array} \\
\hline
\end{array}$
The correct answer is
$\begin{array}{cccc} \text{A} & \text{B} & \text{C} & \text{D} \end{array}$
$\begin{aligned} \text { II } & \text { IV } & \text { III } & \text { I }\end{aligned}$
$\begin{aligned} & \text { III } & \text { IV } & \text { II } & \text { I } \end{aligned}$
$\begin{aligned} & \text{ III } & \text{ I } & \text{ II } & \text{ IV } \end{aligned}$
$\begin{aligned} & \text { I } & \text { III } & \text { IV } & \text { II } \end{aligned}$
Solution
(i) Zeroth law of thermodynamics states about
thermal equilibrium of different states in
contact.
(ii) First law is energy conservation law.
(iii) In free expansion of gases, work done is
always zero.
(iv) Second law of thermodynamics discusses
about flow of heat in thermal bodies.