$\mathrm{p}-$Dichlorobenzene has higher melting point and lower solubility than those of $\mathrm{o}-$ and $\mathrm{m}-$isomers. Discuss.

How the following conversion can be carried out?

Propene to Propan-1-ol

How the following conversion can be carried out?

Ethanol to but-1-yne

How the following conversion can be carried out?

$1$-Bromopropane to $2$-bromopropane

How the following conversions can be carried out?

Toluene to benzyl alcohol

How the following conversions can be carried out?

Benzene to $4-$bromonitrobenzene

How the following conversions can be carried out?

Benzyl alcohol to 2-phenylethanoic acid

How the following conversions can be carried out?

Ethanol to propanenitrile

How the following conversion can be carried out?

Aniline to chlorobenzene