AIPMT 2011 Preliminary Mock Test

Two gases $A$ and $B$ having the same volume diffuse through a porous partition in $20$ and $10$ seconds respectively. The molecular mass of $A$ is $49\text{u}$. Molecular mass of $B$ will be:

Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?

For the reaction ${\text{N}}_2(\text{g})+{\text{O}}_2(\text{g})\rightleftharpoons 2\text{NO}(\text{g})$, the equilibrium constant is $K_1$. The equilibrium constant is $K_2$ for the reaction $2\text{NO}(\text{g})+{\text{O}}_2(\text{g})\rightleftharpoons 2{\text{NO}}_2(\text{g})$. What is $K$ for the reaction ${\text{NO}}_2(\text{g})\rightleftharpoons \frac{1}{2}{\text{N}}_2(\text{g})+{\text{O}}_2(\text{g})$?

If $x$ is the amount of adsorbate and $m$ is the amount of adsorbent, which of the following relations is NOT related to the adsorption process?

If the enthalpy change for the transition of liquid water to steam is $30{\text{kJ mol}}^{-1}$ at $27^{\circ }\text{C}$, the entropy change for the process would be: