Ordinary phosphine is spontaneously inflammable due to the presence of
A. vapours of `P_(4)`
B. vapours of `P_(2)H_(6)`
C. vapours of `P_(2)H_(4)`
D. none of these

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1 Answers

Correct Answer - C
Ordinary phosphine prepared from any source contains `P_(2)H_(4)` and `P_(2)H_(4)` is spontaneously inflammable in air.

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