Which substance can be added to improve acidic soil?
Answer and explanation
Correct answer: Slaked lime
Acidic soil contains excess acidic substances, so it is improved by adding a suitable base through neutralisation. Slaked lime, Ca(OH)₂, is a basic substance and reacts with excess acidity, helping raise the soil pH toward a suitable value for crops. Vinegar and lemon juice contain acids, and hydrochloric acid would make the soil even more acidic. Hence, slaked lime in option A is the correct choice.
Frequently asked questions
What is the correct answer to this question?
Slaked lime
Why is this the correct answer?
Acidic soil contains excess acidic substances, so it is improved by adding a suitable base through neutralisation. Slaked lime, Ca(OH)₂, is a basic substance and reacts with excess acidity, helping raise the soil pH toward a suitable value for crops. Vinegar and lemon juice contain acids, and hydrochloric acid would make the soil even more acidic. Hence, slaked lime in option A is the correct choice.
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.
