Water resources and rivers of India

PYQ (2012-2022 papers)

• 2022 · G4 · Question 156 · Final answer key
• 2022 · G4 · Question 191 · Final answer key
• 2019 · G4 · Question 110 · Final answer key
• 2019 · G4 · Question 181 · Final answer key
• 2016 · G4 · Question 163 · Final answer key
• 2016 · G4 · Question 177 · Final answer key
• 2012 · G4 · Question 6 · Provisional answer key

Provisional key: until TNPSC publishes the final key; the answer may change.

Free questions

1. Question 1

   Consider the following statements on the water resources of Tamil Nadu. 1. Tamil Nadu has 4 per cent of India's area and 6 per cent of its population. 2. Tamil Nadu has only 2.5 per cent of India's water resources. 3. By the 2017 Tamil Nadu statistical handbook, Tamil Nadu has 81 river basins. 4. By the same handbook, Tamil Nadu has 41,127 lakes. Which of these are correct?

   1. A. 1 and 2 only
   2. B. 1, 2 and 4 only
   3. C. 2, 3 and 4 only
   4. D. 1, 2, 3 and 4
   Answer and explanation

   ✓ Correct answer: B. 1, 2 and 4 only

   With 4% of India's area and 6% of its population, Tamil Nadu has only 2.5% of its water resources; the 2017 handbook gives 17 river basins, 81 reservoirs and 41,127 lakes; 81 is the number of reservoirs, not of basins, so 3 is wrong.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 7 தமிழ்நாடு – மானுடப் புவியியல், p. 237 (PDF p. 243))

2. Question 2

   Which is the largest tributary of the Indus?

   1. A. The Jhelum
   2. B. The Chenab
   3. C. The Sutlej
   4. D. The Yamuna
   Answer and explanation

   ✓ Correct answer: B. The Chenab

   The Jhelum, Chenab, Ravi, Beas and Sutlej are tributaries of the Indus; the largest of them is the Chenab.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 1 இந்தியா – அமைவிடம், நிலத்தோற்றம் மற்றும் வடிகாலமைப்பு, p. 147 (PDF p. 153))