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Q.

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P-H bonds, is :

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a

Phosphinic acid

b

Hypophosphoric acid

c

Phosphonic acid

d

Pyrophosphorus acid

answer is B.

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Detailed Solution

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P4 + 3NaOH + 3H2O → PH3 + 3NaH2PO2
oxoacid = H3PO2 (hypo phosphorus acid) or (phosphinic acid)

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