Aniline $\xrightarrow[{{0^{\circ}}C - {5^{\circ}}C}]{{NaNO_2/HCl}}A$ $\xrightarrow{{Ph-N(CH_3)_2}}B$
What is $B$?

The most acidic proton and the strongest nucleophilic nitrogen in the following compound are respectively:

On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide,the organic compound formed is:

On hydrolysis of a "compound",two compounds are obtained. One of which on treatment with sodium nitrite and hydrochloric acid gives a product which does not respond to iodoform test. The second one reduces Tollens reagent and Fehling's solution. The "compound" is

Maximum number of molecules of $CH_3I$ that can react with a molecule of $CH_3NH_2$ are

Reduction of alkyl nitrites yields