Assertion :For biological functions in human body, barium is not required. Reason: Barium is a divalent ion.

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
For biological functions of the human body, we need monovalent Na and K ions and divalent Mg and Ca ions, which are found in large proportions in biological fluids.

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