Why is slaked lime added to acidic soil?
Answer and explanation
Correct answer: To reduce soil acidity
Acidic soil has a pH lower than the range preferred by many crops. Slaked lime, calcium hydroxide [Ca(OH)₂], is a basic substance. It reacts with excess acids in the soil and neutralises them, thereby raising the pH toward a more suitable value. Thus option A is correct. Adding it does not increase acidity, convert soil into gas, or produce sugar; the effect is an acid-base neutralisation.
Frequently asked questions
What is the correct answer to this question?
To reduce soil acidity
Why is this the correct answer?
Acidic soil has a pH lower than the range preferred by many crops. Slaked lime, calcium hydroxide [Ca(OH)₂], is a basic substance. It reacts with excess acids in the soil and neutralises them, thereby raising the pH toward a more suitable value. Thus option A is correct. Adding it does not increase acidity, convert soil into gas, or produce sugar; the effect is an acid-base neutralisation.
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.
