Question

Metals with low melting points can be refined by the process of.

• A. distillation
• B. liquation
• C. froth flotation

Answer 1

The correct option is B liquation

Liquation is a method for separating metals from an ore or an alloy. The material is placed on a sloping surface and heated. Eventually, a temperature is reached where one of the component starts to melt. It drains away from the other and is collected. This method is used to refine the metals which have low melting points as compared to their impurities. Examples - tin$\left(\text{Sn}\right)$ and lead$\left(\text{Pb}\right)$.