Question

Froth floatation is method used for the purification of ______ore. [ ]a) sulphide
b) oxide
c) carbonate
d) nitrate

Answer 1

Answer:

oxide

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Answer 2

Answer:

a. Sulphide ore.

Explanation:

The process of separation of hydrophobic and hydrophilic material from ore is called froth flotation.

This process is primarily used for purification of sulphide ores.

In this process, the difference in wetting of minerals and gangue is taken as an advantage .

Minerals are wetted by oil while gangue is wetted by water. Thus a mixture of water, crushed ore, other substance and oil is prepared and then purification of sulphide ore is carried on.