Question

Match the process of concentration of ore with the property that is based on:

$\begin{array}{cc}\text{Process}& \text{Property}\\ \text{i) Gravity separation}& \text{a) Magnetic property}\\ \text{ii) Froth flotation}& \text{b) Difference in weight}\\ \text{iii) Magnetic separation}& \text{c) Wetting property}\end{array}$

• A. $i\to c,ii\to b,iii\to a$
• B. $i\to a,ii\to b,iii\to c$
• C. $i\to b,ii\to c,iii\to a$
• D. $i\to a,ii\to c,iii\to b$

Answer 1

The correct option is C

$i\to b,ii\to c,iii\to a$

In gravity separation, the ore and gangue are separated based on their different specific weights.

In froth flotation, the ore and gangue are separated by the difference in their wetting properties. Only one of them is wetted by oil.

In magnetic separation, the ore and gangue are separated by their magnetic property. Either component can be magnetic while the other is non-magnetic