Write reactions of the final alkylation product of aniline with excess of methyl iodide in the presence of sodium carbonate solution.

Convert $3-$Methylaniline into $3-$nitrotoluene.

Write IUPAC name of the following compound and classify it into primary, secondary and tertiary amine.

 ${\left({\mathrm{C}\mathrm{H}}_3\right)}_2{\mathrm{C}\mathrm{H}\mathrm{N}\mathrm{H}}_2$

Write IUPAC name of the following compound and classify it into primary, secondary and tertiary amine.

${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_2{\mathrm{NH}}_2$

Write IUPAC name of the following compound and classify it into primary, secondary and tertiary amine.

${\mathrm{C}\mathrm{H}}_3\mathrm{N}\mathrm{H}\mathrm{C}\mathrm{H}{\left({\mathrm{C}\mathrm{H}}_3\right)}_2$

Write IUPAC name of the following compound and classify it into primary, secondary and tertiary amine.

${\left({\mathrm{C}\mathrm{H}}_3\right)}_3{\mathrm{C}\mathrm{N}\mathrm{H}}_2$