How can adding organic matter help improve basic soil?
Answer and explanation
Correct answer: By forming acidic substances during decay
Basic soil has an excess of alkaline character and therefore a pH higher than the desired range for some plants. During decomposition, organic matter can produce humic and other weak acidic substances. These substances can help lower excessive alkalinity and improve the soil’s chemical condition. Hence option A is the best answer. The remaining choices either increase basicity or describe unrelated changes involving metal formation or water removal.
Frequently asked questions
What is the correct answer to this question?
By forming acidic substances during decay
Why is this the correct answer?
Basic soil has an excess of alkaline character and therefore a pH higher than the desired range for some plants. During decomposition, organic matter can produce humic and other weak acidic substances. These substances can help lower excessive alkalinity and improve the soil’s chemical condition. Hence option A is the best answer. The remaining choices either increase basicity or describe unrelated changes involving metal formation or water removal.
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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