The major product formed when $1-$ Bromo $-3-$ Chlorocyclobutane reacts with metallic sodium in dry ether is

Sodium ethanoate on heating with soda lime gives ' $X^{\prime}$. Electrolysis of aqueous solution of sodium ethanoate gives ' $Y^{\prime}$. ' $X^{\prime}$ and ' $Y^{\prime}$ respectively are

But-1-yne on reaction with dil. $\mathrm{H}_2 \mathrm{SO}_4$ in presence of $\mathrm{Hg}^{2+}$ ions at 333 K gives

2-methyl propane can be prepared by Wurtz reaction. The haloalkanes taken along with metallic sodium and dry ether are :

In the given sequence of reactions, identify ' $P^{\prime}, Q^{\prime}, R^{\prime}$ and ' $S$ respectively.

Identify, A and B in the following reaction

Identify 'X' in the following reaction.

The number of $$\pi$$-bonds and $$\sigma$$-bonds present in naphthalene are respectively

2-butyne is reduced to trans-but-2-ene using

The alkyl halides required to prepare by Wurtz reaction are

The reagent $X$ used for the following reaction is