Assertion :Absolute electrode potential can be easily measured by using vacuum tube voltmeter. Reason: Oxidation or reduction cannot take place alone.

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 D Both Assertion and Reason are incorrect
Assertion is false because absolute potential is difficult to determine accurately. For this reason, standard hydrogen electrode is typically used for reference potential.
Reason is true. Whenever oxidation (loss of electrons) takes place, reduction (gain of electrons) also takes place.

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