Assertion :Acid soils are treated by lime. Reason: Liming has harmful as well as beneficial effects.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Acidic soil has more salt concentration, i.e., excess of sodium, potassium etc. Drainage is the primary method of controlling soil salinity. Another method is addition of lime or calcium carbonate. But addition of calcium carbonate will increase concentration of calcium leading to formation of hard calcareous layer.

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