When chloroform reacts with ethyl amine in the presence of alcoholic $KOH$,the compound formed is

An organic compound $(C_3H_9N)$ $(A)$,when treated with nitrous acid,gave an alcohol and $N_2$ gas was evolved. $(A)$ on warming with $CHCl_3$ and caustic potash gave $(C)$ which on reduction gave isopropylmethylamine. Predict the structure of $(A)$.

Which of the following amines reacts most rapidly with $CH_3I$?

Which of the following substances is more basic than aniline?

The reaction of $CH_3NH_2$ with $CH_3MgX$ yields ...........

Aniline,when diazotized in cold and then treated with $N,N$-dimethylaniline,gives a coloured product. Its structure would be: