1.

Ore overset("Calcination")(rarr)Residue overset("dil".HNO_(3))(rarr)underset("Metal(M)+Zn^(2+)(aq.))underset(darr zn dust)(aq. solution) above metallurgy is possible when ore is :-

Answer»

`ZnCO_(3)`
`CaCO_(3). MgCO_(3)`
`CuCO_(3).Cu(OH_(2))`
PbS

Answer :C


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