If the soil of a field becomes too basic, which substance can be useful to add?
Answer and explanation
Correct answer: Organic manure
Excessively basic soil can be improved by adding organic manure. As organic matter decomposes, it produces humus and mild acidic substances that can gradually reduce the soil's alkalinity. Thus option A is the most appropriate choice in the school-level context. Lime, sodium hydroxide, and washing soda are basic or alkaline materials, so adding them would generally increase rather than correct the basic nature of the soil.
Frequently asked questions
What is the correct answer to this question?
Organic manure
Why is this the correct answer?
Excessively basic soil can be improved by adding organic manure. As organic matter decomposes, it produces humus and mild acidic substances that can gradually reduce the soil's alkalinity. Thus option A is the most appropriate choice in the school-level context. Lime, sodium hydroxide, and washing soda are basic or alkaline materials, so adding them would generally increase rather than correct the basic nature of the soil.
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.
