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NEET 2026
Exam
NEET
Year
2026
Subject
Chemistry
Chapter
Thermodynamics (C)

NEET 2026 · Chemistry · Thermodynamics (C)

At a certain temperature, T (K), during a process, 500 J is...

At a certain temperature, TT (K), during a process, 500500 J is absorbed by the system and work of 200200 J is done by the system. Then, change in internal energy of the system is :

Options

  1. A400400 J
  2. B300300 J
  3. C700700 J
  4. D500500 J

Correct answer

B. 300300 J

Step-by-step solution

According to the first law of thermodynamics:

ΔU=q+W\Delta U = q + W

Heat absorbed by the system, q=+500q = +500 J

Work done by the system, W=−200W = -200 J

Substituting the given values:

ΔU=500+(−200)=300\Delta U = 500 + (-200) = 300 J

Answer: 300300 J
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