Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 11
Assertion (A): Enthalpy change for the formation of a compound from its constituent elements is always negative. | Reason (R): Formation of compounds usually results in the release of energy due to bond formation.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option D
Detailed Explanation
The assertion is false because the enthalpy change for the formation of a compound is not always negative, as seen with endothermic reactions like the formation of NO2. The reason is true because bond formation generally releases energy.
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