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Question

Phosphine is prepared by the reaction of :
  1. P and H2SO4
  2. P and NaOH
  3. P and HNO3
  4. P and H2S

A
P and H2SO4
B
P and H2S
C
P and NaOH
D
P and HNO3
Solution
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P4+3NaOH+3H2OPH3+3NaH2PO2
(White) Phosphine Sod.hypophosphite

Phosphine is prepared by dissolving white phosphorous in boiling NaOH solution.

Option B is correct.

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