Lime is added to improve acidic soil. What problem can occur if too much lime is added?
Answer and explanation
Correct answer: Soil can become too basic
The governing concept is neutralisation and control of soil pH. Lime, commonly containing calcium carbonate or calcium hydroxide, is basic and is added in measured amounts to reduce excess acidity. If too much is applied, the soil pH can rise above the suitable range and the soil becomes excessively alkaline. This may reduce nutrient availability and harm plant growth. Therefore option A is correct; the other options are not consequences of adding lime.
Frequently asked questions
What is the correct answer to this question?
Soil can become too basic
Why is this the correct answer?
The governing concept is neutralisation and control of soil pH. Lime, commonly containing calcium carbonate or calcium hydroxide, is basic and is added in measured amounts to reduce excess acidity. If too much is applied, the soil pH can rise above the suitable range and the soil becomes excessively alkaline. This may reduce nutrient availability and harm plant growth. Therefore option A is correct; the other options are not consequences of adding lime.
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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