1.

Oxyacid of phosphorus that can reduce AGNO_3 to silver is

Answer»

`H_3PO_(4)`
`H_4P_2O_7`
`H_3PO_3`
`HPO_3`

Solution :`H_(3)PO_(3)+2AgNO_(3)+H_2O to H_(3)PO_(4)+underset(2 AG )(2HNO_(3^(+)))`


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