Civil Services TNPSC Group 1 (New Syllabus) Mock Test 2025 General Knowledge Geography (World Geography) Biogeography
With reference to black soil, consider the following statements:
1. It is generally clayey, deep, and impermeable.
2. They swell and become sticky when wet and shrink when dried.
3. It retains moisture for a very long time.
Which of the above statements is/are correct?
1
1 only
2
1 and 2 only
3
3 only
4
1, 2 and 3
5
Answer not known