Q. In $108g$ of water, $18$ $g$ of non-volatile compound is dissolved. At ${100}^{o}C$ the vapor pressure of the solution is $750mm$ $Hg$. Assuming that the compound does not undergo association or dissociation, the molar mass of the compound in $g.{mol}^{-1}$ is:

1. $128$
2. $152$
3. $182$
4. $228$

Q. The standard electrode potential of ${Zn}^{2+}|Zn$ is $-0.76V$ and that of ${Cu}^{2+}|Cu$ is $0.34V$. The emf $\left(V\right)$ and the free energy change $\left(kJ{mol}^{-1}\right)$, respectively, for a Daniel cell will be:

1. $-0.42$ and $81$
2. $1.1$ and $-213$
3. $0.42$ and $-81$
4. $-1.1$ and $213$

Q. The maximum number of isomers that can result from monobromination of 2-methyl-2-pentene with $N$-bromosuccinimide in boiling $C{Cl}_4$ is:

1. $4$
2. $2$
3. $3$
4. $1$

Q. The compound $X$ $\left(C_7{H}_{9}N\right)$ reacts with benzenesulfonyl chloride to give $Y$ $\left(C_{13}{H}_{13}N{O}_{2}S\right)$ which is insoluble in alkali. The compound $X$ is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. The major product obtained in the reaction of aniline with acetic anhydride is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. Consider the equilibria (1) and (2) with equilibrium constants $K_1$ and $K_2$ respectively.
$S{O}_2\left(g\right)+\frac{1}{2}{O}_2\left(g\right)\rightleftharpoons S{O}_3\left(g\right)$ ...... (1)
$2S{O}_3\left(g\right)\rightleftharpoons 2S{O}_2\left(g\right)+O_2\left(g\right)$ ...... (2)

1. $2K_1=K_2^2$
2. $K_1^2=\frac{1}{K_2}$
3. $K_2^2=\frac{1}{K_1}$
4. $K_2=\frac{2}{K_1^2}$