Why can adding organic matter gradually improve basic soil?
Answer and explanation
Correct answer: Organic matter can decompose to form mildly acidic substances
The governing concept is acid–base balance in soil. When organic matter decomposes, microorganisms may produce humus and weak organic acids. These substances can gradually lower excessive alkalinity and make the soil more suitable for plant growth. Therefore, option A is correct. Organic matter does not turn soil into metal, remove all water, or always increase basicity, so options B, C, and D are incorrect.
Frequently asked questions
What is the correct answer to this question?
Organic matter can decompose to form mildly acidic substances
Why is this the correct answer?
The governing concept is acid–base balance in soil. When organic matter decomposes, microorganisms may produce humus and weak organic acids. These substances can gradually lower excessive alkalinity and make the soil more suitable for plant growth. Therefore, option A is correct. Organic matter does not turn soil into metal, remove all water, or always increase basicity, so options B, C, and D are incorrect.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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