Which substance can be added to improve excessively basic soil?
Answer and explanation
Correct answer: Organic matter
Excessively basic soil may make several nutrients less available to plants. Organic matter such as compost or manure decomposes through microbial activity and can produce mildly acidic substances, helping lower the soil’s excessive basicity over time. Thus option C is the best answer. Slaked lime and sodium hydroxide are bases, so adding them would not correct alkaline soil; adding more lime would generally intensify the problem.
Frequently asked questions
What is the correct answer to this question?
Organic matter
Why is this the correct answer?
Excessively basic soil may make several nutrients less available to plants. Organic matter such as compost or manure decomposes through microbial activity and can produce mildly acidic substances, helping lower the soil’s excessive basicity over time. Thus option C is the best answer. Slaked lime and sodium hydroxide are bases, so adding them would not correct alkaline soil; adding more lime would generally intensify the problem.
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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