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Question 23077
NEET Chemistry · Medium

Thermodynamics: Numerical thermodynamics MCQ

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Numerical thermodynamicsMediumQuestion 23077

Question

If 50 J work is done on a system and 20 J heat is lost, ΔU\Delta U is:

  1. A
    30 J
    Correct
  2. B
    -30 J
  3. C
    70 J
  4. D
    -70 J

Correct answer

30 J

Explanation

Here q = -20 J and w = +50 J, so ΔU=30\Delta U = 30 J.

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