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NTA Abhyas JEE Main2020ChemistryThermodynamics (C)Practice

Three samples of 100 g of water (samples I, II and III), initially kept at 1 atm pressure and 298 K were given the following treatments. Sample I was heated to 320 K and cooled to 298 K Sample II was heated to 300 K, cooled to 273 K and heated to 298 K Sample III was heated to 373 K and cooled to 298 K At the end of these processes, the internal energy of

Options

  1. AIII is the highest
  2. BII is the highest
  3. CI and III are the same, II is lower than that of I and III
  4. DI, II and III are the same

Correct answer

D. I, II and III are the same

Step-by-step solution

As Internal energy change is a state function so it depends only on the initial and final temperature and does not depends on the path taken.

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