1.

( C) and (D) are respectively

Answer»

`Mn(BO_(2))_(2), MNO_(2)`
`AgNO_(2),Ag_(2)O`
`Cu(BO_(2))_(2), CuO`
none of these

Solution :`Na_(2)B_(4)O_(7)+AgNO_(3)(aq)+H_(2)Oto AgBO_(2) darr+NaNO_(3)+H_(3)BO_(3) overset("Boiled with WATER")toAg_(2)O darr +H_(3)BO_(3)`


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