1.

A metal `X` on heating in nitrogen gas gives `Y,Y` on treatment with `H_(2)O` gives a colourless gas which when passed through `CuSO_(4)` solution gives a blue colour. `Y` is:A. `Mg(NO_3)_2`B. `Mg_3N_2`C. `NH_3`D. MgO

Answer» Correct Answer - B
`underset((X))3Mg+N_2tounderset((Y))Mg_3N_2`
`Mg_3N_2+6H_2Oto3Mg(OH)_2+2NH_3`
`MH_3(g)+CuSO_4(aq)tounderset("Deep blue complex")[Cu(NH_3)_4]SO_4(aq)`


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