Aniline when diazotized in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be:

1.
2.
3.
4.

Aniline in a set of reactions yielded a product D

The structure of the product D would be:

1. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{OH}$

2. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2{\mathrm{NH}}_2$

3. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{NHOH}$

4. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NHCH}}_2{\mathrm{CH}}_3$