Q. In the following reaction the major product is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. In the reaction of $1-$bromo$-3-$chlorocyclobutane with two equivalents of sodium in the ether, the major product is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. The order of basicity in increasing order is:

1. $IV<I<III<II$
2. $II<I<IV<III$
3. $IV<III<I<II$
4. $II<III<I<IV$

Q. A piece of metal weighing $100$ g is heated to ${80}^o$ C and dropped into $1$ kg of cold water in an insulated container at ${15}^o$ C. If the final temperature of the water in the container is ${15.69}^o$ C, the specific heat of the metal in $J/g^o$.C is:

1. $0.38$
2. $0.24$
3. $0.45$
4. $0.13$

Q. The structure of $3-methylpent-2-ene$ is:

1. 
   
2. 
   
3. 
   
4. 
   

Q. The reaction of an alkene X with bromine produces a compound Y, which has $22.22\%$C, $3.71\%$H and $74.07\%$Br. The ozonolysis of alkene X gives only one product. The alkene X is?[Given: atomic mass of $C=12;H=1;Br=80$].

1. Ethylene
2. $1$-butene
3. $2$-butene
4. $3$-hexene

Q. The photoelectric behaviour of K, Li, Mg and Ag metals is shown in the plot. If light of wavelength $400$nm is incident on each of these metals, which of them will emit photoelectrons? [Planck's constant $h=6.626\times {10}^{-34}$Js; velocity of light $c=3\times {10}^8$m $s^{-1};1$eV$=1.6\times 10{-}^{-19}$J].

1. K
2. K, Li and Mg
3. K and Li
4. K, Li, Mg and Ag

Q. The stability of carbanions follows the order.

1. $I<II<IV<III$
2. $IV<III<II<I$
3. $III<IV<I<III$
4. $III<II<I<IV$

Q. $KMn{O}_4$ reacts with $H_2{O}_2$ in an acidic medium. The number of moles of oxygen produced per mole of $KMn{O}_4$ is?

1. $1.25$
2. $2$
3. $2.5$
4. $5$

Q. In the following reaction $H_{3}C-C\equiv C-H\stackrel{H{g}^{2+}}{\underset{H_3{O}^{+}}{\to }}X\stackrel{dil.NaOH}{\underset{PhCHO}{\to }}Y$.

1. 
   
2. 
   
3. 
   
4.