On electrolysis of an aqueous solution of sodium butanoate,a hydrocarbon is formed. The number of carbon atoms present in the hydrocarbon is:

The chemicals and the reaction conditions required for the preparation of ethane are:

$(A) + Cl_2 \xrightarrow{hv} \text{monochloro product}$. To maximize the yield of the monochloro product in the above reaction:

Identify substrate '$S$' in the following reaction: $S \xrightarrow{Na / \text{dry ether}} 3, 4-\text{diethyl}-3, 4-\text{dimethylhexane}$

Explain the difference in the boiling points of the branched structures of pentane $(C_5H_{12})$. Explain how branching affects the boiling point of isomeric alkanes.

The reaction of $1, 3-$dibromopropane with metallic zinc gives ..........