Question
Cause of diagonal relationship is
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$Benzene$ $\xrightarrow{HCHO+HCl}\,A$$\xrightarrow{AgCN}\,B$
$A$. $\mathrm{Mn}_2 \mathrm{O}_7$ 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
Choose the correct answer from the options given below :
Major product $(A)$ is
${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{ - 4}}\xrightarrow{{MnO_4^ - /{H^ + }}}F{e^{ + 3}} + C{O_2} + NO_3^ - $