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Question

“Catch water where it falls” is the basic idea behind:


A

Recycling of water

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B

Making dams to store water

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C

Rainwater harvesting

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D

Condensation of water vapor.

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Solution

The correct option is C

Rainwater harvesting


The correct option is C

Explanation of the correct option:

  1. ‘Catch water where it falls’ is the basic idea behind rainwater harvesting.
  2. It is a method to collect and store water.
  3. The rainwater is collected from rooftops, runoff, etc. then purified and stored for later use.
  4. It also helps to reduce soil erosion and flood hazards by collecting rainwater.
  5. It helps to reduce the flow of storm water to prevent urban flooding.
  6. Rainwater harvesting provides us with drinking water, irrigation water etc.

Explanation of the incorrect option:

Option A:

  1. Recycling of water is a complex process that involves collecting and treatment of wastewater.
  2. The idea “Catch water where it falls” is not associated with it.

Option B:

  1. Dams are constructed over large water reservoirs like lakes, rivers, etc. to block the flow of water and to use it for agricultural purposes and to make electricity.
  2. It is not based on “Catch water where it falls”.

Option D:

  1. Condensation of water vapour is collecting water vapour and making it again in liquid form.
  2. The hot vapour is cooled to get condensed water.
  3. It does not involve “Catch water where it falls”.

Final answer: “Catch water where it falls” is the basic idea behind rainwater harvesting.


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