Which of the following reagents will be useful to distinguish between ?
- Dilute $\mathrm{HCl}$
- $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{SO}_{2}$ and $\mathrm{OH} / \mathrm{H}_{2} \mathrm{O}$
- HONO then $\beta$ -naphthol
- $\mathrm{AgNO}_{3}$ in $\mathrm{H}_{2} \mathrm{O}$
Solution

Asked in: JEE-TOPICTESTS-CHEMISTRY