Which substance can be added to basic soil so that acidic substances may gradually form?
Answer and explanation
Correct answer: Organic matter
Basic soil has an excess of alkaline substances, so adding another strong or moderately basic material would not correct it. Organic matter can decompose through microbial activity and produce humus and various mildly acidic substances. These products may gradually lower the soil’s alkalinity. Lime, sodium hydroxide, and washing soda are basic materials and would generally maintain or increase basicity. Therefore, option C is correct.
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What is the correct answer to this question?
Organic matter
Why is this the correct answer?
Basic soil has an excess of alkaline substances, so adding another strong or moderately basic material would not correct it. Organic matter can decompose through microbial activity and produce humus and various mildly acidic substances. These products may gradually lower the soil’s alkalinity. Lime, sodium hydroxide, and washing soda are basic materials and would generally maintain or increase basicity. Therefore, option C is correct.
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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