Assertion :Magnesium ribbon is ignited with a heated wire. Reason: Magnesium ribbon is ignited by heated wire to give magnesium oxide.

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
Magnesium ribbon is ignited with heating wire and on reaction with oxygen, it gives magnesium oxide.

$2 M g + O_{2} \to 2 M g O$

The magnesium ribbon is ignited with a heated wire as the magnesium ribbon does not burn on its own.

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