Which of the following is regenerated at the end of the reaction

(1) X

(2) Y

(3) Z

(4) W

'x' and 'y' are respectively :

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

What will be the product of the following reaction

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

Product (A) & (B) of the above reaction is:-
1. A=P, B=P
2. A=Q, B=Q
3. A=P, B=Q
4. A=Q, B=P

In which of the following reactions cyanide will be obtained as a major product?

1.  $<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>O$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left|\right|$
$Ph‐C‐C{H}_3\underset{\left(ii\right)<mspace\; width="1em"></mspace>H_3{O}^{+}}{\overset{\left(i\right)<mspace\; width="1em"></mspace>LiAl{H}_4}{\to }}$

 $<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>O$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left|\right|$
$2.<mspace\; width="1em"></mspace>Ph‐C‐N{H}_2\underset{B{r}_2}{\overset{NaOH}{\to }}$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>O$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left|\right|$
$3.<mspace\; width="1em"></mspace>Ph‐C‐N{H}_2\underset{B{r}_2}{\overset{P_4{O}_{10}}{\to }}$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>O$
$<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left|\right|$
$4.<mspace\; width="1em"></mspace>Ph‐C‐O‐H\stackrel{SOC{l}_2}{\to }<mspace\; width="1em"></mspace>\stackrel{N{H}_3}{\to }$

Product (A) is:

1.   

2.  

3.   

4.  

Which of the following alkene cannot be prepared by de-amination of n-Bu-NH₂ with NaNO₂/HCl ?

(1) 1-butene

(2) cis-2-butene

(3) trans-2-butene

(4) Iso-butene

 $\underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{NaNO}}_2}{\to }}<mspace\; width="1em"></mspace>\left(\mathrm{A}\right);<mspace\; width="1em"></mspace>\mathrm{Product}<mspace\; width="1em"></mspace>\mathrm{of}<mspace\; width="1em"></mspace>\mathrm{this}<mspace\; width="1em"></mspace>\mathrm{reaction}<mspace\; width="1em"></mspace>\mathrm{is}:$

1.  

2. 

3.  

4.  

 $\stackrel{{\mathrm{HNO}}_2}{\to }$(A) + + CH₂ = CH-CH₂-CH₂-OH   

A will be:

(a) $\begin{array}{ccccc}{\mathrm{Ch}}_2<mspace\; width="1em"></mspace>=<mspace\; width="1em"></mspace>\mathrm{CH}& -& \underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}& -& {\mathrm{CH}}_3\end{array}$

(b) 

(c) 

(d)