Question

Insoluble impurities from solution during crystallization are removed by :

• A. drying
• B. filtration
• C. heating
• D. cooling

Answer 1

Answer: (B)

Heating is the process of increasing the temperature of a body from its original temperature.

Cooling is the process of decreasing the temperature of a body from its original temperature.

Filtration is the process of separating small particles of solid matter from a liquid, by causing the liquid to pass through the pores of some substance, called a filter.

Insoluble impurities from solution during crystallization are removed by filtration as the insoluble solid particles passed through the filter.

Drying is the process of drying up the liquid present on any material by heating the material.

Option B is correct.