Assertion :Nitrogen gas is filled in electric bulbs. Reason: Nitrogen is colorless, odourless and tasteless gas.

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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Assertion is incorrect but Reason is correct

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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
Nitrogen is used in electric bulbs since the gas provides an inert atmosphere. The bulb has tungsten filament which gets oxidised easily and nitrogen is required to make the environment inert.
Thus, the reason that Nitrogen is colourless, odourless and tasteless gas is incorrect to explain why nitrogen is used in electric bulbs.

Hence, the correct option is (B).

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