Identify A, B and C in the sequence.

$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br} \underset{\text { Alc. }}{\stackrel{\mathrm{KCN}}{\longrightarrow}} A \stackrel{\mathrm{LiAlH}_4}{\longrightarrow} B \stackrel{\mathrm{HNO}_2}{\longrightarrow} C$$

In the following pairs of halogen compounds, which compound undergoes faster $$S_N 1$$ reaction?

Which one of the following chlorohydrocarbon readily undergoes solvolysis?

Peroxide effect is observed with the addition of $$\mathrm{HBr}$$ but not with the addition of HI to unsymmetrical alkene because