Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about enthalpy and reactions is correct?
A
The enthalpy change of an overall reaction is the sum of the enthalpy changes of individual steps.
B
A negative enthalpy change indicates an endothermic reaction.
C
The enthalpy of atomization is equal to the heat released during bond formation.
D
Enthalpy changes are independent of the physical states of the reactants and products.
Correct Answer
Option A
Detailed Explanation
The enthalpy change of an overall reaction can be expressed as the sum of the enthalpy changes of the individual steps, as stated in the NCERT context. This reflects Hess's law. The other options contain inaccuracies regarding enthalpy and reaction types.
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