Assertion :Nitrogen turns moist red litmus paper blue. Reason: Ammonia is a basic 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 D Assertion is incorrect but Reason is correct
Nitrogen is a neutral gas hence, it does not show any change with Litmus. Hence, the statement 'Nitrogen turns moist red litmus paper blue.' is false.
Ammonia is a basic gas hence, it changes Litmus paper blue. This statement is true.
Hence, Assertion is incorrect but Reason is correct.

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