The correct Answer is
A-4, B-3, C-2, D-1
Explanation
Soil types in India exhibit distinct characteristics influenced by their formation processes, parent material, climate, and topography. Understanding these characteristics is crucial for identifying and classifying different soil categories.
Statement-wise Analysis
- A. Alluvial Soil - 4. Formed by deposition from Himalayan river systems
- Correct: Alluvial soils are widespread in the northern plains and river valleys. They are formed by the deposition of sediments brought by rivers, particularly the Indo-Gangetic-Brahmaputra system originating from the Himalayas. These soils are generally fertile.
- B. Black Soil - 3. High moisture retention capacity
- Correct: Black soils, also known as Regur soils, are characteristic of the Deccan trap region. They are known for their high clay content, which gives them excellent moisture-retaining capacity. This property makes them suitable for cotton cultivation.
- C. Laterite Soil - 2. Prone to erosion; develops under heavy leaching
- Correct: Laterite soils develop in areas with high temperatures and heavy rainfall. Intense leaching due to heavy rain washes away silica, leaving behind iron and aluminum compounds. These soils are generally poor in fertility and are prone to erosion.
- D. Arid Soil - 1. High accumulation of kankar in lower horizons
- Correct: Arid soils are found in dry regions with high temperatures and low rainfall. Due to dry conditions, evaporation exceeds precipitation, leading to the accumulation of calcium carbonate (kankar) nodules in the lower horizons. These soils are generally sandy and saline.
Key Takeaway
Different soil types in India are characterized by specific formation processes and physical properties, such as moisture retention, mineral composition, and susceptibility to erosion, which are directly linked to their geographical distribution and climatic conditions.