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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$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{C{H_3} - CH - C{H_2} - C - C{H_3}} \\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_2} - CH - C{H_2}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,} \\
{CN\,\,\,\,\,\,\,\,CN\,\,\,\,\,\,\,\,CN\,\,}
\end{array}$