Assertion :Elements of group 1 are called alkali metals Reason: All the alkali metals react with water.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Group 1 elements are called alkali metals because they form hydroxides on reaction with water which are strongly alkaline in nature.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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