The formation of alkene from alkyl halide is an example of

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

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

Which of the following statements is invalid?

Identify the products formed in the following reaction: $CH_3-CH_2-CH_2-CHBr-CH_3 \xrightarrow{KOH / C_2H_5OH} ?$

The correct order of the rate of the reaction for the following reaction with respect to nucleophiles is: $CH_{3}Br + Nu^{\ominus} \longrightarrow CH_{3}Nu + Br^{\ominus}$