NEET2026Chemistry-Thermodynamics
NEET 2026 Chemistry First Law of Thermodynamics MCQ Question
Type: MCQ-conceptual-Medium-Class 11
At a certain temperature, T (K), during a process, 500 J is absorbed by the system and work of 200 J is done by the system. Then change in internal energy of the system is:
A
400 J
B
300 J
C
700 J
D
500 J
Correct Answer
Option B
Detailed Explanation
Using the first law of thermodynamics, ΔU = q + w, where q = +500 J and w = -200 J, the change in internal energy is 300 J.
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