In the given compounds,which has the highest boiling point $:-$

Hydrocarbon $(A)$ reacts with bromine by substitution to form an alkyl bromide,which by Wurtz reaction is converted to a gaseous hydrocarbon containing less than four carbon atoms. $(A)$ is

The most suitable solvent for $Wurtz$ reaction is

The interaction that causes the most instability in the boat conformation of cyclohexane is .......

Give the methods of preparation of alkanes. Write the general reactions.

Which of the following reactions is used to prepare hydrocarbons with an even number of carbon atoms?
$i.$ Wurtz reaction
$ii.$ Decarboxylation reaction
$iii.$ Kolbe's electrolysis
$iv.$ Reduction
$v.$ Hydrogenation