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1. Which of the following pairs is incorrect?
A. Peaty soil — Kerala and coastal West Bengal
B. Saline soil — Saurashtra and Kutch
C. Lateritic soil — Chota Nagpur plateau
D. Alluvial soil — Ladakh region
2. Which soil type is known for the phenomenon of “self-ploughing” due to swelling and shrinking?
A. Lateritic soil
B. Black cotton soil
C. Alluvial soil
D. Red soil
3. Which of the following soils has developed due to intense leaching in humid tropical climates?
A. Black soil
B. Lateritic soil
C. Alluvial soil
D. Desert soil
4. Which soil type in India is richest in potash but poor in nitrogen?
A. Alluvial soil
B. Black soil
C. Lateritic soil
D. Peaty soil
5. Which statement about mountain soils in India is correct?
A. They are generally immature and rich in humus
B. They are formed by wind-blown deposits
C. They are only found above 3000 m altitude
D. They have uniform texture throughout the Himalayas
Answers Quiz- 186 (August 11)
1. B
Explanation: Indo-Gangetic plains in Uttar Pradesh have extensive saline and alkaline patches due to waterlogging and poor drainage.
2. A
Explanation: Due to high clay content (montmorillonite), black cotton soil swells and retains maximum moisture.
3. C
Explanation: Desert soils are sandy, low in organic matter, alkaline, and rich in soluble salts.
4. B
Explanation: Laterite soils in high rainfall areas, when devoid of vegetation, erode quickly due to their looseness and heavy runoff.
5. B
Explanation: Red sandy soils in Tamil Nadu, Andhra Pradesh, and Karnataka provide well-drained conditions favorable for groundnut.
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