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QPage 46: Q1: Calorimetry Solutions — HC Verma: Concepts of Physics - Volume 2
⚠️ Common Exam Traps & Conceptual Pitfalls
Students often conflate heat with internal energy, but heat is energy in transit and is not a state function; it is only conserved in the specific context of an isolated system where no work is done, unlike internal energy which is always conserved.
Is heat a conserved quantity?
Step-by-Step Verified Solution
**Answer:** Yes, heat is a conserved quantity.
**Step-by-Step Explanation:**
Suppose two bodies A and B are at different temperatures, wherein A is higher and B is lower. When they are brought in contact, the heat given by A is equal to the heat gained by B. Thus, the heat is conserved in the system. Here, we have ignored the heat exchanged with the surroundings. If we consider the surroundings, the heat of the system will be conserved.[citation:1][citation:13]
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