MCQ
The atomic radius of $Ag$ is closest to
- A$Cu$
- B$Hg$
- ✓$Au$
- D$Ni$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

| $1$ | $2$ | $3$ | |
| $\mathrm{HI}\left(\mathrm{mol} \mathrm{L}^{-1}\right)$ | $0.005$ | $0.01$ | $0.02$ |
| Rate $\left(\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}-1\right)$ | $7.5 \times 10^{-4}$ | $3.0 \times 10^{-3}$ | $1.2 \times 10^{-2}$ |
Roasted gold ore $+CN^-+ H_2O \xrightarrow{{{O_2}}} [x] + OH^-;$ $[x] + Zn \rightarrow [y] + Au$
$[x]$ and $[y]$ are :