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KCET2011ChemistryThermodynamics (C)

Based on the first law of thermodynamics, which one of the following is correct?

Options

  1. AFor an isothermal process, Q=+W
  2. BFor an isochoric process, U=-Q
  3. CFor an adiabatic process, U=-W
  4. DFor a cyclic process, Q=-W

Correct answer

D. For a cyclic process, Q=-W

Step-by-step solution

According to first law of thermodynamics, U=Q+W For cyclic process, change in internal energy aligned &=0 Q &=-W aligned Q=-W

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