काली मिट्टी वाले क्षेत्रों में गीलापन-सूखापन चक्र से कौन-सा प्रभाव अधिक होता है?
What effect is common in black-soil regions due to wetting-drying cycles?
Explanation opens after your attempt
A. संकुचन-प्रसार से दरारों का बननाFormation of cracks by shrinkage and swelling
Concept
Clay minerals swell with water and shrink on drying. Connect this with physical weathering and soil cracks in exams.
Why this answer is correct
The correct answer is A. संकुचन-प्रसार से दरारों का बनना / Formation of cracks by shrinkage and swelling. Clay minerals swell with water and shrink on drying. Connect this with physical weathering and soil cracks in exams.
Exam Tip
मृत्तिका खनिज पानी पाकर फैलते और सूखकर सिकुड़ते हैं। परीक्षा में यह भौतिक अपक्षय और मृदा दरारों से जोड़ें।
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