AIIMS 2018 Chemistry Decomposition Reactions Assertion Reason Question
Assertion: Pure N₂ is formed from Ba(N₃)₂ Reason: Mass of Barium is high
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because barium azide, Ba(N₃)₂, decomposes to produce nitrogen gas (N₂) and barium, confirming that pure N₂ is indeed formed. However, the reason provided is false; the mass of barium does not directly relate to the formation of N₂, as the decomposition reaction is driven by the instability of the azide compound rather than the mass of barium. Option A is incorrect because the reason does not explain the assertion, while options C and D are incorrect as both the assertion is true and the reason is false.
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