Chemistry-Enthalpy
NEET Chemistry Enthalpy MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about enthalpy is correct?
A
In an exothermic reaction, the enthalpy change is negative.
B
Enthalpy is always a positive quantity for all reactions.
C
The enthalpy of all elements in their standard states is positive.
D
Endothermic reactions release heat to the surroundings.
Correct Answer
Option A
Detailed Explanation
In an exothermic reaction, heat is evolved, leading to a negative enthalpy change (∆H). This aligns with the NCERT context stating that q_p will be negative and ∆H will also be negative in such reactions.
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