Why does a farmer add slaked lime to highly acidic soil?
Answer and explanation
Correct answer: To reduce the acidity of the soil
The governing concept is acid–base neutralisation in soil treatment. Slaked lime, Ca(OH)₂, is a basic substance. When it is mixed with highly acidic soil, it reacts with excess acidic components and reduces their effect, bringing the soil closer to a suitable pH for plant growth. Therefore option A is correct. The treatment does not increase acidity, manufacture chlorine, or convert soil into salt.
Frequently asked questions
What is the correct answer to this question?
To reduce the acidity of the soil
Why is this the correct answer?
The governing concept is acid–base neutralisation in soil treatment. Slaked lime, Ca(OH)₂, is a basic substance. When it is mixed with highly acidic soil, it reacts with excess acidic components and reduces their effect, bringing the soil closer to a suitable pH for plant growth. Therefore option A is correct. The treatment does not increase acidity, manufacture chlorine, or convert soil into salt.
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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