Physics-Heat Engines
NEET Physics Heat Engines MCQ Question
Type: MCQ-fact-Hard-Class 11
What is the sign of ∆H for exothermic reactions?
A
Negative
B
Positive
C
Zero
D
Undefined
Correct Answer
Option A
Detailed Explanation
For exothermic reactions, the change in enthalpy (∆H) is negative as heat is released during the reaction, indicating that the system loses energy to the surroundings.
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