MCQ
m-chlorobenzaldehyde on treatment with $50 \%$ $\mathrm{KOH}$ solution yields
- A

- ✓

- C

- D







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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
$A$. $\mathrm{Mn}_2 \mathrm{O}_7$ is an oil at room temperature
$B$. $\mathrm{V}_2 \mathrm{O}_4$ reacts with acid to give $\mathrm{VO}_2^{2+}$
$C$. $\mathrm{CrO}$ is a basic oxide
$D$. $\mathrm{V}_2 \mathrm{O}_5$ does not react with acid
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