Soil, minerals and natural resources

PYQ (2012-2022 papers)

• 2022 · G4 · Question 158 · Final answer key
• 2016 · G4 · Question 109 · Final answer key
• 2016 · VAO · Question 96 · Final answer key
• 2012 · G4 · Question 8 · Provisional answer key
• 2012 · G4 · Question 33 · Provisional answer key
• 2012 · G4 · Question 87 · 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 soils of Tamil Nadu. 1. The soils of Tamil Nadu are of five types: alluvial, black, red, laterite and saline. 2. About two-thirds of the state's area is black soil. 3. Black soil is called regur soil or cotton soil. 4. Saline soil is on the Coromandel coast, especially at Vedaranyam. Which of these are correct?

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

   ✓ Correct answer: D. 1, 3 and 4 only

   Tamil Nadu has five soil types; about two-thirds of the state is red soil, not black soil; black soil is called regur or cotton soil; saline soil is only on the Coromandel coast, especially at Vedaranyam; so 2 is wrong.

   Source: சமூக அறிவியல், பத்தாம் வகுப்பு, தமிழ் வழி (Social Science, Standard X, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 6 தமிழ்நாடு – இயற்கைப் பிரிவுகள், p. 222 (PDF p. 228))

2. Question 2

   Into how many types are rocks divided by their mode of formation?

   1. A. Two
   2. B. Three
   3. C. Five
   4. D. Eight
   Answer and explanation

   ✓ Correct answer: B. Three

   By their mode of formation rocks are of three types: igneous, sedimentary and metamorphic.

   Source: சமூக அறிவியல், எட்டாம் வகுப்பு, தமிழ் வழி (Social Science, Standard VIII, Tamil medium; Samacheer Kalvi) (புவியியல் அலகு 1 பாறை மற்றும் மண், p. 100 (PDF p. 106))