Question

If water is polluted, then which of the following change will not be observed?

• A. Change in the colour and increase in the salinity of water
• B. Decrease in quality of water due to foul smell and change in color
• C. Uncontrolled growth of the weeds in water
• D. Increase in the growth of fish

Answer 1

The correct option is D Increase in the growth of fish

Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.

Due to pollution, dissolved oxygen in water decreases, so the growth of fish will not be observed.

Hence, option D is correct.