JEE · NEET Previous Year Question
The correct statements regarding froth floatation method in metallurgy are
I. Used for the purification of sulphide ores
II. Used for the roasting of sulphide ores
III. It is based on the relative densities of gangue and ore particles
IV. It is based on the difference in the wetting properties of gangue and ore particles in frothing agent and water
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- AI & IV only
- BII & III only
- CII & IV only
- DI & III only
Correct answer: A
Solution
(a) The froth floatation process is used for the concentration (purification) of ores, specially sulphide ores. It is based on the principle of relative preference of wetting of gangue and ore particles in water and frothing agent.Thus, I and IV are correct.
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