If soil has very low pH and too much lime is added, what problem may occur?
Answer and explanation
Correct answer: The soil may become too basic
A very low pH indicates that the soil is acidic. Lime, commonly containing calcium carbonate or calcium oxide, is basic and is added to neutralise excess acidity. However, the amount must be controlled. If too much lime is applied, the neutralisation can go beyond the suitable range and raise the pH excessively, making the soil alkaline. Therefore option A is correct; the other choices do not describe this reaction.
Frequently asked questions
What is the correct answer to this question?
The soil may become too basic
Why is this the correct answer?
A very low pH indicates that the soil is acidic. Lime, commonly containing calcium carbonate or calcium oxide, is basic and is added to neutralise excess acidity. However, the amount must be controlled. If too much lime is applied, the neutralisation can go beyond the suitable range and raise the pH excessively, making the soil alkaline. Therefore option A is correct; the other choices do not describe this reaction.
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.
