JEE Main levelOne or more correct optionsDifficulty 2 of 3mt141
In the froth flotation of a sulphide ore, which of the following statements are correct?
Acresol or aniline can be added as froth stabilisers
Bthe method works because the ore is denser than the gangue and settles first
Cpine oil acts as a collector, helping the ore particles to stick to the froth
DNaCN can be used as a depressant to prevent ZnS from floating in presence of PbS
Answer: A, C, D
Collectors (pine oil, xanthates) enhance non-wettability of the ore, stabilisers such as cresol keep the froth stable, and NaCN is a depressant. Flotation depends on preferential wetting by oil or water, not on density difference.