NEET Physics Heat Engines MCQ Question
Consider a diagram of a calorimeter setup used for measuring heat change at constant pressure. Which of the following statements correctly describes the process occurring within this device?
The heat absorbed or evolved is called the enthalpy of reaction.
The internal energy change is measured directly in the calorimeter.
The calorimeter measures the heat change at constant volume.
The system gains heat during an exothermic reaction.
Correct Answer
Detailed Explanation
In a calorimeter, the heat change at constant pressure is measured as the enthalpy of reaction, which can be positive or negative depending on whether the reaction is endothermic or exothermic.
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