Chemistry-First Law
NEET Chemistry First Law MCQ Question
Type: MCQ-fact-Hard-Class 11
What does the equation ∆U = q + w represent in the context of the First Law of Thermodynamics?
A
Change in internal energy of a system
B
Total heat absorbed by the system
C
Work done by the system only
D
Heat transferred only during an isothermal process
Correct Answer
Option A
Detailed Explanation
The equation ∆U = q + w is a mathematical statement of the first law of thermodynamics, which indicates that the change in internal energy (∆U) of a system is equal to the heat added to the system (q) plus the work done on the system (w).
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