The insecticide containing $99\%$ $\gamma-isomer$ of benzene hexachloride is known as

Chloroform reacts with concentrated $HNO_{3}$ to give

Which among the following statements is $NOT$ correct about $SN^2$ reaction mechanism?

The major product obtained in the reaction of $1$-phenyl-$2$-bromobutane with $NaOMe$ is:

In the following reactions,
$(i) CH_3-CH(CH_3)-CH(OH)-CH_3 \xrightarrow{H^{+}/\text{heat}} A \text{ [Major product]} + B \text{ [Minor product]}$
$(ii) A$ $\xrightarrow[\text{in absence of peroxide}]{HBr, \text{dark}} C \text{ [Major product]} + D \text{ [Minor product]}$
the major products $(A)$ and $(C)$ are respectively:

Which one of the following is not true for the hydrolysis of $t$-butyl bromide with aqueous $NaOH$?