A soil has pH 4.5. Which treatment is more scientific?
Answer and explanation
Correct answer: Add a suitable amount of slaked lime
A pH of 4.5 indicates that the soil is distinctly acidic. Slaked lime, calcium hydroxide, is a basic substance that can neutralise some of the excess acidity and raise the soil pH when applied in a suitable, tested amount. Therefore option A is correct. Vinegar, lemon juice, and dilute acid would add acidity and make the soil condition worse rather than correct it.
Frequently asked questions
What is the correct answer to this question?
Add a suitable amount of slaked lime
Why is this the correct answer?
A pH of 4.5 indicates that the soil is distinctly acidic. Slaked lime, calcium hydroxide, is a basic substance that can neutralise some of the excess acidity and raise the soil pH when applied in a suitable, tested amount. Therefore option A is correct. Vinegar, lemon juice, and dilute acid would add acidity and make the soil condition worse rather than correct it.
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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