2016 · Q45
Which of the following statements regarding soil is/are correct?
- 1Alluvial soils are rich in nitrogen content.
- 2Black soils are rich in iron and lime but deficient in nitrogen.
- 3Laterite soils are rich in iron and aluminium but deficient in nitrogen and potassium.
Select the correct answer using the code given below.
General KnowledgeGeography
- A1 and 2 only
- B3 only
- C2 and 3 only
- D1, 2 and 3
Explanation
Alluvial soils are actually deficient in nitrogen (though rich in potash and phosphoric acid), so statement 1 is false. Black (regur) soils are rich in iron, lime, calcium and magnesium but poor in nitrogen and humus (2 true). Laterite soils are rich in iron and aluminium oxides but deficient in nitrogen and potassium (3 true). Hence 2 and 3 only.