How many methyl groups are present in $n-hexadecyl$ trimethyl ammonium chloride?

How many structural isomers are possible for $C_7H_9N$ containing a benzene ring?

What is the molecular formula of cyclohexylamine?

In a primary amine,the amino group $(-NH_2)$ is attached to which type of carbon atom?

The alkyl cyanides are

Nitrobenzene is prepared from benzene using a mixture of concentrated $HNO_3$ and concentrated $H_2SO_4$. In the nitrating mixture,$HNO_3$ acts as a ........