The correct order of basic strength of Pyrrole,Pyridine,and Piperidine is:

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

In the reaction sequence $A$ $\xrightarrow{Sn/HCl} B$ $\xrightarrow{HNO_2, 0^{\circ}C} C$ $\xrightarrow{C_2H_5OH} C_6H_6$,identify the functional groups present in $A, B,$ and $C$.

The final product $R$ of the reaction is:

Which of the following would produce an alcohol on treatment with $NaNO_2$ and $HCl$ in the presence of water?

For the diazonium ions,the order of reactivity towards the diazo-coupling with phenol in the presence of dilute $NaOH$ is:
$(I)$ $Me_2N-C_6H_4-N_2^+$
$(II)$ $O_2N-C_6H_4-N_2^+$
$(III)$ $CH_3O-C_6H_4-N_2^+$
$(IV)$ $CH_3-C_6H_4-N_2^+$