CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals
Problem
Froth floatation :
(1) is a physical method of separating mineral from the gangue
(2) is a method to concentrate the ore depending on the difference in wetability of gangue and the ore
(3) is used for the sulphide ores
(4) is a method in which impurities sink to the bottom