An aromatic compound "A" on treatment with $\mathrm{Zn} / \mathrm{NH}_4 \mathrm{Cl}$ and subsequent heating…

An aromatic compound "A" on treatment with $\mathrm{Zn} / \mathrm{NH}_4 \mathrm{Cl}$ and subsequent heating with ammonical silver nitrate solution gives a black precipitate. Which functional groups does "A" contain?
  1. $-\mathrm{CHO}$
  2. $-\mathrm{NO}_2$
  3. $-\mathrm{OH}$
  4. $-\mathrm{COOH}$

Solution

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Asked in: AP EAMCET 2020 (07 Oct Special)

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