Why is slaked lime useful in treating acidic soil?
Answer and explanation
Correct answer: It is basic and reduces acidity
The governing concept is neutralisation and pH correction. Acidic soil has an excess of acidic substances and therefore a relatively low pH. Slaked lime, calcium hydroxide, Ca(OH)₂, is a base; it reacts with acidic components and reduces their acidity. This raises the soil pH toward a more suitable range for plants. Thus option A is correct, while the other choices contradict basic chemistry or describe impossible changes.
Frequently asked questions
What is the correct answer to this question?
It is basic and reduces acidity
Why is this the correct answer?
The governing concept is neutralisation and pH correction. Acidic soil has an excess of acidic substances and therefore a relatively low pH. Slaked lime, calcium hydroxide, Ca(OH)₂, is a base; it reacts with acidic components and reduces their acidity. This raises the soil pH toward a more suitable range for plants. Thus option A is correct, while the other choices contradict basic chemistry or describe impossible changes.
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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