question_answer

In hypophosphorus acid the number of hydroxyl groups present are :

A)  5                                            

B)  1

C)  3                                            

D)  7

Correct Answer: B

Solution :

                 Hypophosphorus acid is \[{{\text{H}}_{\text{3}}}\text{P}{{\text{O}}_{\text{2}}}\]and its structure is so, \[{{\text{H}}_{\text{3}}}\text{P}{{\text{O}}_{\text{2}}}\] has only one hydroxyl group.