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Phosphine is generally prepared in the l...

Phosphine is generally prepared in the laboratory

A

By heating phosphorus in a current of hydrogen

B

By decomposition of `P_(2)H_(4)` at 110

C

By heating red phosphorus with an aquesous solution of caustic soda

D

By heating white phosphors with caustic potash

Text Solution

Verified by Experts

The correct Answer is:
D
`underset("White or yellow")(P_(4)) +3KOH +3H_(2)O to underset("Potassium hypophosphite")(3KH_(2)PO_(2))+PH_(3)`
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