An agricultural soil has become too acidic. Which substance is useful to improve it?
Answer and explanation
Correct answer: Slaked lime
Very acidic soil can interfere with nutrient availability and may harm plant roots. Slaked lime, calcium hydroxide, is a basic substance that reacts with and neutralises excess acidity in the soil. Hence option A is correct. Vinegar, lemon juice, and acid rainwater are acidic, so adding them would increase rather than correct the soil’s acidity.
Frequently asked questions
What is the correct answer to this question?
Slaked lime
Why is this the correct answer?
Very acidic soil can interfere with nutrient availability and may harm plant roots. Slaked lime, calcium hydroxide, is a basic substance that reacts with and neutralises excess acidity in the soil. Hence option A is correct. Vinegar, lemon juice, and acid rainwater are acidic, so adding them would increase rather than correct the soil’s acidity.
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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