Which type of substance can be useful to improve basic soil?
Answer and explanation
Correct answer: Organic matter
The governing concept is adjustment of soil pH through acid-base action. Excessively basic soil can be improved by adding suitable organic matter, because decomposition may produce weak organic acids that gradually reduce alkalinity and improve the soil condition. Sodium hydroxide and washing soda are basic and would generally increase alkalinity; bleaching powder is not the appropriate amendment for this purpose. Therefore organic matter is the best answer among the choices.
Frequently asked questions
What is the correct answer to this question?
Organic matter
Why is this the correct answer?
The governing concept is adjustment of soil pH through acid-base action. Excessively basic soil can be improved by adding suitable organic matter, because decomposition may produce weak organic acids that gradually reduce alkalinity and improve the soil condition. Sodium hydroxide and washing soda are basic and would generally increase alkalinity; bleaching powder is not the appropriate amendment for this purpose. Therefore organic matter is the best answer among the choices.
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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