AIIMS2018Chemistry-Chemical Reactions

AIIMS 2018 Chemistry Decomposition Reactions Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 11

Assertion: Pure N₂ is formed from Ba(N₃)₂ Reason: Mass of Barium is high

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Correct Answer

Option B

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.

Found an issue with this question?