Question

Read the following statements regarding rainwater harvesting carefully and choose the correct option.

1. It is a method to capture and store rainwater for various uses.
2. Groundwater aquifers are aimed to recharge by this method.
3. Rainwater harvesting increases water availability for use.
4. Storing water by dam construction is very widely used in India for rainwater harvesting.

• A. Only I, II and III are correct.
• B. Only I, II and IV are correct.
• C. Only I, III and IV are correct.
• D. Only II, III and IV are correct.

Hint:

Rainwater harvesting captures and stores rain and recharges aquifers. Large dams are not the usual harvesting method, so IV is wrong.

Answer 1

The Correct Option is A

Step 1: Recall the concept:
Rainwater harvesting is a low cost and eco-friendly way to capture and store rainwater for use and for recharge of groundwater.

Step 2: Check statement I:
This is the basic definition of rainwater harvesting. So I is TRUE.

Step 3: Check statement II:
The stored water seeps into the ground and recharges aquifers. So II is TRUE.

Step 4: Check statement III:
Water that would run off is saved, so more water is available for use. So III is TRUE.

Step 5: Check statement IV:
Rainwater harvesting works through roof top collection, tanks, johads and recharge pits at household and village level.
Big dams are large river projects for many purposes. They are not the method widely used for rainwater harvesting. So IV is FALSE.

Step 6: Match with options:
True statements are I, II and III, which is option (A).
Options (B), (C) and (D) all include IV, so they are wrong.

Final Answer:
Only I, II and III are correct, so option (A) is right.