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Question (31)
QN0037551
A farm uses 10,000 units of irrigation water and reduces wastage by 15%. How many units of water are saved?
  • (A) 500
  • (B) 1,000
  • (C) 1,500
  • (D) 2,000

Correct Answer: C
Explanation:

Water saved = 15% of 10,000 = 1,500 units.

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Question (32)
QN0037552
The Sardar Sarovar multipurpose project is constructed on which river?
  • (A) Mahanadi
  • (B) Narmada
  • (C) Sutluj
  • (D) Krishna

Correct Answer: B
Explanation:

The Sardar Sarovar Project is built on the Narmada River.

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Question (33)
QN0037553
The Sardar Sarovar Project provides irrigation to 18.45 lakh hectares in Gujarat and 2.46 lakh hectares in Rajasthan. Approximately what percentage of the total irrigation area is in Rajasthan?
  • (A) 10.0%
  • (B) 11.8%
  • (C) 13.3%
  • (D) 20.0%

Correct Answer: C
Explanation:

Total = 18.45 + 2.46 = 20.91 lakh hectares. Rajasthan share = (2.46 ÷ 20.91) × 100 ≈ 11.8%. Correct answer should be b.

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Question (34)
QN0037554
Which set of states is associated with the Sardar Sarovar Project?
  • (A) Gujarat, Rajasthan, Maharashtra and Madhya Pradesh
  • (B) Odisha, Bihar, Jharkhand and West Bengal
  • (C) Punjab, Haryana, Rajasthan and Himachal Pradesh
  • (D) Kerala, Tamil Nadu, Karnataka and Andhra Pradesh

Correct Answer: A
Explanation:

The Sardar Sarovar Project involves Gujarat, Rajasthan, Maharashtra and Madhya Pradesh.

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Question (35)
QN0037555
In a drought-prone area, 75% of 400 households depend on rainwater harvesting. How many households use this method?
  • (A) 200
  • (B) 250
  • (C) 300
  • (D) 350

Correct Answer: C
Explanation:

75% of 400 = 0.75 × 400 = 300 households.

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Question (36)
QN0037556
A state diverts a large amount of river water upstream, reducing water availability for agriculture and industries downstream. This situation can lead to:
  • (A) Inter-state water dispute
  • (B) Increase in rainfall
  • (C) Reduction in evaporation
  • (D) Elimination of water scarcity

Correct Answer: A
Explanation:

Competition over river water between different states can result in inter-state water disputes.

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Question (37)
QN0037557
If an upstream state withdraws more water from a river, what is the most likely effect on downstream areas?
  • (A) More water becomes automatically available
  • (B) Downstream water availability may decrease
  • (C) Rainfall immediately increases
  • (D) Groundwater becomes unlimited

Correct Answer: B
Explanation:

Greater upstream withdrawal can reduce the quantity of water flowing downstream.

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Question (38)
QN0037558
A drought-prone village wants to reduce dependence on external water supplies. Which measure would be most suitable?
  • (A) Rainwater harvesting
  • (B) Increasing water wastage
  • (C) Increasing only groundwater extraction
  • (D) Removing storage tanks

Correct Answer: A
Explanation:

Rainwater harvesting stores local rainfall and can provide water during periods of scarcity.

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Question (39)
QN0037559
Which traditional water-harvesting system is associated with the Western Himalayas?
  • (A) Kuls or guls
  • (B) Khadins
  • (C) Tankas
  • (D) Bamboo drip irrigation

Correct Answer: A
Explanation:

Kuls or guls are traditional diversion channels used for irrigation in the Western Himalayas.

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Question (40)
QN0037560
Which pair is correctly matched?
  • (A) Khadins — Jaisalmer
  • (B) Kuls — Tamil Nadu
  • (C) Tankas — Meghalaya
  • (D) Bamboo drip — Rajasthan

Correct Answer: A
Explanation:

Khadins are traditional rainwater-harvesting structures associated with the arid region of Rajasthan, including Jaisalmer.

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