Assertion :In laboratory, a solution of a desired concentration is prepared by diluting a stock solution. Reason: Stock solution is the solution of higher concentration.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The stock solution is the solution of higher concentration. Therefore in the laboratory, a solution of the desired concentration is prepared by diluting a stock solution.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Hence, option $A$ is correct

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(b)If both assertion and reason are true but reason is not the correct explanation of the assertion.

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