Which one of the acids is a dibasic acid ?

Which of the following is a dibasic acid?

Assertion: Phosphorous acid is a dibasic acid Reason: In phosphorous acid, there are two H-atoms directly attached to phosphorous.

The equivalent weight of sulphuric acid is given as 98. How far it is true when sulphuric acid is a dibasic acid?

Give at least one example to explain the following properties. (a) Sulphuric acid is a dibasic acid. (b) Sulphuric acid is a dehydrating agent. (c) Sulphuric acid is an oxidising agent.

Give at least one example to explain the following properties. (a) Sulphuric acid is a dibasic acid. (b) Sulphuric acid is a dehydrating agent. (c) Sulphuric acid is an oxidising agent.

Give three reasons with equations wherever required, why sulphuric acid is a dibasic acid