What benefit can adding organic matter give in highly basic soil?
Answer and explanation
Correct answer: It can improve soil balance
The governing idea is correction of soil pH. Highly basic soil has an excessively high pH, and suitable organic matter can decompose gradually to produce mildly acidic substances. These substances may reduce excess alkalinity and improve the soil’s chemical balance over time. Thus option A is correct. The change is gradual, not instant; organic matter does not turn soil into metal or automatically remove every dissolved salt, so B, C, and D are unsuitable.
Frequently asked questions
What is the correct answer to this question?
It can improve soil balance
Why is this the correct answer?
The governing idea is correction of soil pH. Highly basic soil has an excessively high pH, and suitable organic matter can decompose gradually to produce mildly acidic substances. These substances may reduce excess alkalinity and improve the soil’s chemical balance over time. Thus option A is correct. The change is gradual, not instant; organic matter does not turn soil into metal or automatically remove every dissolved salt, so B, C, and D are unsuitable.
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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