Question

3. Which one is the purest form of water?

• A. River water
• B. Groundwater
• C. Rainwater
• D. Ocean water

Answer 1

The correct option is C

Rainwater

Explanation of correct option:

(C) Rainwater:

• It is the purest form of water.
• The rainwater directly comes from the condensation of water in the presence of the sun.
• The water evaporates from the lakes, rivers, and seas.
• All the impurities are removed during the evaporation process, and then water falls directly into the earth in the form of rain.

Explanation of incorrect option:

(A) River water:

• It contains pollutants, minerals, and micro-organisms.
• So, it is not the purest form of water.

(B) Groundwater:

• It is the water present below the earth's surface.
• It contains different types of minerals and micro-organisms.

(D) Ocean water:

• It is the largest source of water.
• It contains a high concentration of salts.
• So, the ocean water is salty and unfit for use.

Conclusion: Hence, option (C) is correct.