MCQ
Moissan boron is
- AAmorphous boron of ultra purity
- BCrystalline boron of ultra purity
- ✓Amorphous boron of low purity
- DCrystalline boron of low purity
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$(A)$ $NO _3^{-}$ $(B)$ $Cl ^{-}$ $(C)$ $SCN ^{-}$ $(D)$ $CN ^{-}$
$\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}} \\
|
\end{array}} \\
{C{H_3} - C - C{H_3}} \\
| \\
H
\end{array}{\mkern 1mu} $ $\mathop {\xrightarrow{{C{H_3}OBr}}}\limits_{C{H_3}OH} $