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Water harvesting - class-X

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Water harvesting is

  1. Collection of river water

  2. Collection of rainwater in storage tanks or in the soil to recharge ground water

  3. Harvesting of water from tube walls

  4. All of the above


Correct Option: B

Find out about the traditional systems of water harvesting/management in your region.

  1. Tanks

  2. Rainwater

  3. Sea

  4. Holes


Correct Option: A
Explanation:
In my state, tanks are the traditional water harvesting system. This system ensures groundwater recharge during rainy season and thus ensures around the year availability of drinking water in many villages.

Which of the following has lowest water table?

  1. Desert

  2. Forest area

  3. Plains

  4. None of the above


Correct Option: A

Seeping of rainwater through the ground prevents

  1. Global warming

  2. Flood

  3. Forest fire

  4. None of the above


Correct Option: B

Which of the following do plants not compete for?

  1. Water

  2. Food

  3. Space

  4. All above


Correct Option: A

Which of the following intercepts with the rainwater and helps in dripping?

  1. Root

  2. Crown

  3. Trunk

  4. None of the above


Correct Option: B

Assuming that the night will remain clear, calm, and unsaturated, the predicted minimum temperature is $32^{o}F$. Suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be:

  1. About the same as predicted but will occur earlier in the night

  2. Higher than predicted due to the release of latent heat

  3. Much lower than predicted due to radiational cooling

  4. Higher than predicted due to mixing


Correct Option: D

Rain water harvesting is a major method implemented for ___________

  1. Water Conservation

  2. Soil Conservation

  3. Forest conservation

  4. Ecological conservation


Correct Option: A

Find the incorrect match.

  1. Himachal Pradesh - Khatri

  2. Maharashtra - Bandharas

  3. Bihar - Bundhis

  4. Kerala - Surangams


Correct Option: C

.......... is the first and the only state in India, which has made roof top rain water harvesting structure and is compulsory to all the houses across the state.

  1. Tamil Nadu

  2. Andhra Pradesh

  3. Maharashtra

  4. Madhya Pradesh


Correct Option: A
Explanation:
Tamil Nadu is the first and the only state in India which has made roof top rain water harvesting structure and is compulsory to all the houses across the state. The harvesting of rainwater simply involves the collection of water from surfaces on which rain falls, and subsequently storing this water for later use. The practice has been patchy in many parts of the country, but Tamil Nadu’s experiment with the alternative water conservation technique is a rare success story.
The Rain Water Harvesting (RWH) scheme, Tamil Nadu chief minister J Jayalalithaa, was launched in 2001 in a bid to rejuvenate water sources and improve ground water levels in the parched southern state.
So, the correct answer is option A.

Ahars, Kattas, Bhundhis and Khadins are the modes of

  1. afforestation

  2. deforestation

  3. soil conservation

  4. water harvesting


Correct Option: D
Explanation:

The people of rural India use different methods to collect water. Water-harvesting techniques used depend on the location where it is to be used.

Which sector is the single-largest consumer of fresh water in India?

  1. Agriculture

  2. Industry

  3. Domestic

  4. Power


Correct Option: A
Explanation:

Agriculture is the largest user of fresh water resources, consuming 70% followed by industry (20 %) and municipalities account for remaining 10%.

Khadins, Ahars and Kattas are ancient structures that are example of water harvesting.

  1. True

  2. False


Correct Option: A
Explanation:

Water harvesting is an age-old concept in India. Khadins, tanks and nadis in Rajasthan; bandharas and tals in Maharashtra; bundhis in Madhya Pradesh and Uttar Pradesh; ahars and pynes in Bihar; kulhs in Himachal Pradesh; pond in the Kandi belt of Jammu region and eris (tanks) in Tamil Nadu; surangams in Kerala; and kattas in Karnataka are some of the ancient water harvesting, including water conveyance structures.

So, the correct answer is 'True'.

The modern method of rainwater harvesting is

  1. Rooftop

  2. Runoff

  3. Bandharas

  4. Both A and B


Correct Option: D

Seeping of rainwater through the soil helps to maintain

  1. Water table

  2. Watercycle

  3. Nitrogen

  4. None of the above


Correct Option: A

Which of the following is the component of rooftop rainwater harvesting system?

  1. Catchment

  2. First flush

  3. Filter

  4. All of the above


Correct Option: D
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