Statement (I): The rainwater collection for direct use can be practiced by collecting the water coming down from the roof into a storage tank of plastic, RCC or masonry. Statement (II): In a campus, where sufficient space is not available, the water can be stored in an open excavated pond.
- ABoth Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)
- BBoth Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)
- CStatement (I) is true but Statement (II) is falseCorrect
- DStatement (I) is false but Statement (II) is true
Solution
Concept
Rainwater harvesting storage
Step-by-step solution
1. Roof-top water can be led into a storage tank of plastic, RCC or masonry for direct use (Statement I true). 2. An open excavated pond needs a large area; it is used where sufficient space IS available. Where space is limited, a closed tank is used (Statement II false).
Explanation
Ponds are possible only when there is plenty of land, so the second statement contradicts the condition it mentions.
Why the other options are wrong
Options (a) and (b) require Statement II to be true.
Shortcut
Little space → tank; plenty of space → pond.
Common mistake
Accepting the pond for a crowded campus.
Correct answer: C) Statement (I) is true but Statement (II) is false