Which is not obtained when metal carbides react with ${\mathrm{H}}_2\mathrm{O}$?

$1.<mspace\; width="1em"></mspace>{\mathrm{Al}}_4{\mathrm{C}}_3<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>\mathrm{CH}\equiv \mathrm{CH}$
$2.<mspace\; width="1em"></mspace>{\mathrm{CaC}}_2<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>\mathrm{CH}\equiv \mathrm{CH}$
$3.<mspace\; width="1em"></mspace>{\mathrm{Mg}}_2{\mathrm{C}}_3<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>{\mathrm{CH}}_3\mathrm{C}\equiv \mathrm{CH}$
$4.<mspace\; width="1em"></mspace>{\mathrm{Be}}_2\mathrm{C}<mspace\; width="1em"></mspace>+<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{O}<mspace\; width="1em"></mspace>\to <mspace\; width="1em"></mspace>{\mathrm{CH}}_4$

Consider the following reaction:-

A and B are isomeric compounds. Additionally, A is a monochloro derivative. These two can be differentiated easily by using:

1. AgN$O_3$(aq)

2. ${\mathrm{Br}}_2/{\mathrm{FeCl}}_3$

3. Conc.HN${\mathrm{O}}_3$/$\mathrm{Conc}.{\mathrm{H}}_2{\mathrm{SO}}_4$

4. NaCl(aq)

The major product of following reaction will be:-$\underset{}{\overset{}{}}$

1. 

2. 

3. 

4. 

Which of the following have maximum B.P

1.     2.  

3.   4.  

What will be the name of the given reaction?

1. Gatterman Koch reaction

2. Etard reaction

3. Gattermann reaction

4. Rosenmund reaction

o-xylene on reductive ozonolysis gives

1.  

2.  

3.  

4.  

1.  $\mathrm{Ph} - \mathrm{CH}2 - \mathrm{CH} = \mathrm{CH} - {\mathrm{CH}}_2\mathrm{Br}$

2.  $\mathrm{PH} - \stackrel{\mathrm{Br}}{\stackrel{|}{\mathrm{CH}}} - \mathrm{CH} = \mathrm{CH} - {\mathrm{CH}}_3$

3.  $\mathrm{Ph} - {\mathrm{CH}}_2 - {\mathrm{CH}}_2 - \underset{\mathrm{Br}}{\underset{|}{\mathrm{CH}}} - {\mathrm{CH}}_3$

4.  $\mathrm{Ph} - {\mathrm{CH}}_2 - \underset{\mathrm{Br}}{\underset{|}{\mathrm{CH}}} - {\mathrm{CH}}_2 - {\mathrm{CH}}_3$

A and B respectively are:-

1.  

2.  

3.  

4.  

Which of the following reaction does not give ethane as a product?

1.  ${\mathrm{CH}}_3<mspace\; width="1em"></mspace>-<mspace\; width="1em"></mspace>\mathrm{Cl}\underset{\mathrm{dry}<mspace\; width="1em"></mspace>\mathrm{either}}{\overset{\mathrm{Na}}{\to }}$

2.  ${\mathrm{CH}}_3-\mathrm{COOH}\underset{\mathrm{lime}}{\overset{\mathrm{Soda}}{\to }}$

3.  ${\mathrm{CH}}_3-\mathrm{COOK}\stackrel{\mathrm{electrolysis}}{\to }$

4.  ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{O}-{\mathrm{CH}}_2-{\mathrm{CH}}_3\underset{\mathrm{Hl}}{\overset{\mathrm{Red}<mspace\; width="1em"></mspace>\mathrm{P}}{\to }}$

The main product A and B in the above mentioned reaction are respectively- 

1. 

2. 

3. 

4.