Question

A student observes the following things daily in his surroundings. Which one is a good practice to avoid water pollution?

• A. A lady washing clothes in a river.
• B. A farmer using fertilisers in his field, which is on the river bank.
• C. A person throwing wastes in a nearby river.
• D. A person washing his car on a grassy area instead of a street.

Answer 1

The correct option is D A person washing his car on a grassy area instead of a street.

When we wash cars on grassy areas, the waste water drains into it. Before it reaches the ground water level, it gets naturally purified by the different layers of soil.