A soil has pH 8.8. Which idea is correct to balance it for crops?
Answer and explanation
Correct answer: Carefully add organic matter giving a mild acidic effect
A pH of 8.8 indicates that the soil is distinctly basic. To move its pH toward a range more suitable for many crops, a suitable mildly acidic amendment or organic matter may be applied carefully, preferably after soil testing. Slaked lime and sodium hydroxide are alkaline, so they would increase basicity rather than correct it. Soap solution is also unsuitable and may harm soil structure. Therefore option A is the best choice.
Frequently asked questions
What is the correct answer to this question?
Carefully add organic matter giving a mild acidic effect
Why is this the correct answer?
A pH of 8.8 indicates that the soil is distinctly basic. To move its pH toward a range more suitable for many crops, a suitable mildly acidic amendment or organic matter may be applied carefully, preferably after soil testing. Slaked lime and sodium hydroxide are alkaline, so they would increase basicity rather than correct it. Soap solution is also unsuitable and may harm soil structure. Therefore option A is the best 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.
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