A) heating it with a catalyst in an inert atmosphere
B) distilling it in an inert atmosphere
C) dissolving it in \[\text{C}{{\text{S}}_{\text{2}}}\]and crystallizing
D) melting it and pouring the liquid into water
Correct Answer: A
Solution :
Red P is obtained from white P by heating it with a catalyst in an inert atmosphere. \[\text{White P}\xrightarrow[\begin{smallmatrix} \text{catalyst}\,\text{inert} \\ \,\,\,\,\,\,\text{atomsp} \end{smallmatrix}]{\Delta }\text{Red}\,\text{P}\]
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