MCQ
Correct formula of potassium ferricyanide is
- A${K_4}Fe{(CN)_6}$
- ✓${K_3}Fe{(CN)_6}$
- C${K_3}[Fe{(CN)_3}]$
- D${K_3}[Fe{(CN)_4}]$
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The compound $B$ is

$\begin{array}{*{20}{c}} {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH} \\ {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ {( \pm )\,\,C{H_3} - C{H_2} - CH - C{H_3}} \end{array}$ $\xrightarrow[\Delta ]{{{H_3}P{O_4}}}P\,\xrightarrow[{Ni}]{{{D_2}}}Q$