Soils of India — Prelims Questions

Which of the following statements about Black Soils (Regur) in India is/are correct? 1. They are derived from the weathering of basaltic rocks. 2. They are highly moisture-retentive and develop deep cracks when dry. 3. They are rich in nitrogen and phosphorus, making them ideal for rice cultivation. 4. They are predominantly found in the Indo-Gangetic plains. Select the correct answer using the code given below:

Consider the following statements regarding Alluvial Soils in India: 1. They are the most widespread and agriculturally productive soils. 2. Khadar soils are older alluvium, while Bhangar soils are newer alluvium. 3. They are generally rich in potash and lime but deficient in nitrogen and phosphorus. Which of the statements given above is/are correct?

Laterite soils are primarily found in regions experiencing: 1. High temperature and heavy rainfall. 2. Arid conditions with scanty rainfall. 3. Moderate temperatures and seasonal rainfall. 4. Cold climates with permafrost.

Which of the following soil conservation methods is most effective in preventing wind erosion in arid and semi-arid regions? 1. Terracing 2. Contour Ploughing 3. Shelterbelts 4. Strip Cropping

Consider the following pairs: Soil Type Characteristic 1. Red and Yellow Soil: Rich in humus and nitrogen 2. Laterite Soil: Highly acidic and poor in nutrients 3. Arid Soil: High in soluble salts and calcium carbonate Which of the pairs given above is/are correctly matched?