One of the techniques used for desalination of seawater is

A. Filtration

B. Distillation

C. evaporation

D. Condensation

Question

Question

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NTPC Tier I (Held On: 19 Apr 2016 Shift 2)

Answer 1

The correct answer is Distillation.

Key Points

Distillation is an important separation process in chemistry, industry, and food science.
Distillation is the process of separating components of a mixture based on different boiling points.
Examples of uses of distillation include purification of alcohol, desalination, crude oil refining, and making liquefied gases from the air.

Important Points

Filtration	Filtration is the process of separating suspended solid matter from a liquid. The liquid which has passed through the filter is called the filtrate. The filter may be paper, cloth, cotton-wool, asbestos, slag- or glass-wool, unglazed earthenware, sand, or other porous material.
Evaporation	Evaporation is the process by which water changes from a liquid to a gas or vapor. It is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.
Condensation	Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. Happens one of two ways: Dew Point and Saturation.