First slide
Orthoboric acid
Question

Statement I : In water orthoboric acid behaves as a weak monobasic acid
Statement II : In water orthoboric acid acts as a proton donor

Easy
Solution

In water boric acid behaves as weak monobasic acid and it is not protonic acid. It is a lewis acid .The liberated proton is from water and not from boric acid. So cannot acts as proton donor in water. hence statement-I is true and statement-II is false.

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