${\mathrm{CH}}_3\mathrm{C}\equiv \mathrm{C}.{\mathrm{CH}}_3$$\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}/\mathrm{Zn}}{\overset{\left(\mathrm{i}\right) \mathrm{X}}{\to }}$$C{H}_3-C-C-C{H}_3$
$\left|\right| \left|\right|$
$O O$

In the above reaction X is:

1. ${\mathrm{HNO}}_3$ 

2. ${\mathrm{O}}_2$

3. ${\mathrm{O}}_3$

4. ${\mathrm{KMnO}}_4$

The major product of the following reaction is:

 +  Alc.KOH $\to$  ?

1. Butene

2. But-2-ene

3. Butane 

4. But-1-yne

An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is:

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$ 

2. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

3. ${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_2\mathrm{OH}$   

4. 

Gammexane (a $\mathrm{\gamma }$-isomer) is:

1. BHC
2. Benzene hexachloride
3. Lindane
4. All of the above

In the following reaction the catalyst used is:

         $\to$${\mathrm{C}}_6{\mathrm{H}}_6$ + 3${\mathrm{H}}_2$

1. ${\mathrm{Cr}}_2{\mathrm{O}}_3$                                      2. $A{l}_2{\mathrm{O}}_3$

3. Zn dust                                    4. ${\mathrm{Cr}}_2{\mathrm{O}}_3$ and $A{l}_2{\mathrm{O}}_3$

Silver acetylide when heated with HCl gives:

1. ${\mathrm{C}}_2{\mathrm{H}}_2$

2. ${\mathrm{H}}_2$

3. ${\mathrm{C}}_2{\mathrm{H}}_4$ 

4. ${\mathrm{C}}_6{\mathrm{H}}_6$

$\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. NaNH₂               
4. Zn in alcohol 

Which of these will not react with acetylene?

1. NaOH                                       
2. Amm. ${\mathrm{AgNO}}_3$
3. Na                                           
4. HCl

Alkene-1 on hydroboration followed with action of ${\mathrm{H}}_2{\mathrm{O}}_2$ gives:

1. alkanol-2 

2. alkanol-1

3. alkanal 

4. alkanone

The reaction,

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

1. sulphonation 

2. dehydration

3. alkylation

4. decomposition