MCQ
Aldehydes and ketones can be reduced to corresponding hydrocarbons by
- ARefluxing with water
- BRefluxing with strong acids
- CRefluxing with soda amalgam and water
- ✓Refluxing with zinc amalgam and concentrated $HCl$

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$ {\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+}+\mathrm{NH}_3 \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+} ; \mathrm{k}_2=1.7 \times 10^{-3}}$
then the formation constant of $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}$is