1.

For H_(3)PO_(3) and H_(3)PO_(4) the correct choice is

Answer»

`H_(3)PO_(3)` is DIBASIC and reducing
`H_(3)PO_(3)` is dibasic and non-reducing
`H_(3)PO_(4)`is tribasic and reducing
`H_(3)PO_(3)`is tribasic and non-reducing.

Answer :A


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