The conversion of $A$ to $B$ is an example of which reaction?
$\text{Propanenitrile}$ $\xrightarrow{LiAlH_4} A$ $\xrightarrow{CHCl_3 / \text{alcoholic } KOH, \Delta} B$

What is the correct order of basic strength for $NH_3$,$CH_3NH_2$,and $(CH_3)_2NH$?

Consider the given reaction,find the correct order of percentage yield for the products $A$,$B$,and $C$:

Aniline reacts with mixed acid (conc. $HNO_3$ and conc. $H_2SO_4$) at $288 \ K$ to give $P$ $(51 \%)$,$Q$ $(47 \%)$ and $R$ $(2 \%)$. The major product$(s)$ of the following reaction sequence is (are):
$R$ $\xrightarrow[2) Br_2, CH_3CO_2H]{1) Ac_2O, \text{pyridine}}$ $\xrightarrow{3) H_3O^+}$ $\xrightarrow{4) NaNO_2, HCl / 273-278 \ K}$ $\xrightarrow{5) EtOH, \Delta}$ $\xrightarrow{6) Sn/HCl}$ $\xrightarrow{7) Br_2/H_2O \text{ (excess)}} \text{Major Product}$

The reaction of $N$-ethylcyclohexanamine with excess $CH_3I$ yields a product. Identify the product.

During the acetylation of amines,what is replaced by acetyl groups?