The major product formed in carbylamine reaction is

Which of the following is the strongest base?

In the reaction: $\text{Primary Amine} + CHCl_3 + KOH \rightarrow \text{Product}$,what is the product?

Which of the following will not give Hoffmann bromamide reaction?

In the following reactions,$P$,$Q$,$R$,and $S$ are the major products.
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The correct statement about $P$,$Q$,$R$,and $S$ is

Consider the following reaction:
$C_6H_5NO_2$ $\xrightarrow{Sn/HCl} X$ $\xrightarrow{C_6H_5COCl} Y + HCl$
What is $Y$?