MCQ
Bone black is a polymorphic form of
- ✓Phosphorus
- BSulphur
- CCarbon
- DNitrogen
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$[Figure]$ $\xrightarrow[{CHC{l_3}}]{{\mathop {\left( {Pyridinium\,chlorochromate} \right)}\limits^{PCC} }}$

(image) $\xrightarrow[{KCN}]{{CuCN}}P\xrightarrow{{LiAl{H_4}}}Q\xrightarrow{{HN{O_2}}}X$