The major product of the following reaction is:

Identify the products of the given reactions.

Which one of the following is more readily hydrolysed by $S_{N}1$ mechanism?

Arrange the following in order of $C-Br$ bond strength in a polar solvent. The structures are as follows:
$(I)$ $1$-methylcyclohexa-$2,4$-dienyl bromide
$(II)$ cyclohexa-$2,4$-dienyl bromide
$(III)$ $1$-methylcyclopenta-$2,4$-dienyl bromide
$(IV)$ cyclopenta-$2,4$-dienyl bromide

Phosgene is formed slowly from which one of the following on exposure to air and sunlight?

The reaction of $n$-propyl bromide with ethanolic potassium hydroxide $(KOH)$ produces ...... .