Which of the following represents the azo group?

The following compounds can be classified as $N,N$-dimethylpropan$-1-$amine,$N$-methylaniline,and aniline,respectively. Identify their classification as primary,secondary,or tertiary amines.

Explain the classification of amine compounds with suitable examples.

The gas responsible for the Bhopal gas tragedy is:

The $IUPAC$ name of the compound $CH_3-CH(CH_3)-CH(Ph)-NH_2$ is:

The $IUPAC$ names of the following compounds $A$ and $B$ are: