$\hspace{0.17em}\mathrm{R}-{\mathrm{CH}}_2-{\mathrm{CCl}}_2-\mathrm{R}\stackrel{\mathrm{Reagent}}{\to }$$\mathrm{R}-\mathrm{C}\equiv \mathrm{C}-\mathrm{R}$. The reagent is

1. Na                                     2. HCl in ${\mathrm{H}}_2\mathrm{O}$

3. KOH in ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$                 4. Zn in alcohol 

The reaction,

$\stackrel{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$ is the example of:

(a) sulphonation                            (b) dehydration

(c) alkylation                                 (d) decomposition

The end product 'W' in the follownign sequence of reactions is :

1.
2.
3.	$\mathrm{Ph}-{\mathrm{CH}}_2-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Ph}$
4.

Consider the following reaction sequence

$\stackrel{{\mathrm{HNO}}_3+{\mathrm{H}}_2{\mathrm{SO}}_4}{\to } \stackrel{Sn+HCl}{\to }\underset{\left(6H\right)}{\overset{NaN{O}_2+HCl}{\to }}\stackrel{C{u}_2{\left(CN\right)}_2+HCN}{\to }\stackrel{H_{2}O}{\to }Product$

Product is

(1)
(2)
(3)
(4)

${\mathrm{CH}}_3\mathrm{Cl} \stackrel{ }{\to }{\mathrm{CH}}_4$

Above conversion can be achieved by:

(a) Zn/H⁺

(b) LiAlH₄

(c) Mg /(ether) then H₂O

(d) all of these

CH₃-CH₂-CH₂-CH₃    $\stackrel{AlCl3/∆}{\to }$         CH₃-CH-CH₃
                                                                       l
                                                                       CH3

Above reaction is an example of:-
(a)isomerization (b)polymerization (c)cracking (d)de-hydrogenation

 (Kolbe electrolysis method)

Product (A) of the reaction is :

1. CH₃-CH₃

2. CH₂=CH2

3. CH₃-CH=CH₂

4. none of these

Which of the following bromides is the major product of the reaction shown below, assuming that there are no carbocation rearrangement?
+HBr →C₁₃H₁₇Br
                      (1 equivalent)

_{1.  2.}

_{3.  4.}   

Compound (A) is :

1.  2. 

3.  4. 

$\underset{2. {\mathrm{NaHSO}}_3}{\overset{1. {\mathrm{OsO}}_4}{\to }}$ Product of the reaction is :

1.    

2. 

3.      

4.