question_answer

Strong reducing behaviour of \[{{H}_{3}}P{{O}_{4}}\] is due to                                [NEET 2015 (Re)]

A) presence of one —OH group and two P—H bonds

B) high electron gain enthalpy of phosphorus

C) high oxidation state of phosphorus

D) presence of two —OH groups and one P—H bond

Correct Answer: A

Solution :

[a] The oxy acid of phosphorus which contain P—H bond act as a reducing agent or reductant.

In \[{{H}_{3}}P{{O}_{2}}\] one—OH group and two P—H bonds are present.