MCQ
Common name of Benzene-1, 2-diol is
- Aquinol
- Bresorcinol
- Ccatechol
- Do-cresol

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$I.$ $Zn +$ conc. $HNO_3$ (hot) $\rightarrow Zn(NO_3)_2 + X + H_2O$
$II.$ $Zn +$ dil. $HNO_3$ (cold) $\rightarrow Zn(NO_3)_2 + Y + H_2O$
Compounds $X$ and $Y$ are respectively
| List-I Complex | List-II Primary valency and Secondary valency | ||
| (A) | $\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right] \mathrm{Cl}$ | (I) | 3 $\quad$ 6 |
| (B) | $\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right]$ | (II) | 3 $\quad$ 4 |
| (C) | $\mathrm{Hg}\left[\mathrm{Co}(\mathrm{SCN})_{4}\right]$ | (III) | 2 $\quad$ 6 |
| (D) | $[\mathrm{Mg}(\mathrm{EDTA})]^{2-}$ | (IV) | 2 $\quad$ 4 |