1.

Ore of a metal `M(X) to overset("roasting")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M"` Ore of metal `M(Y) to overset("calcination")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M"`A. X=chalcocite Y=malachiteB. X=Galena Y=CerussiteC. X-Zinc blende Y=CalamineD. a and b both are correct

Answer» Correct Answer - D


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