Purification And Characterisation Of Organic Compounds Question 1

Question: Sulphide ores are generally concentrated by

[CPMT 1980, 82; EAMCET 1980; MNR 1981; DPMT 1982; KCET 1993]

Options:

A) Froth floatation process

B) Magnetic separation

C) Gravity separation

D) By hand picking

Show Answer

Answer:

Correct Answer: A

Solution:

Froth floatation method is based on the fact that the surface of sulphide ores is preferentially wetted by oil while that of gangue is wetted by water.