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JEE Main Chemistry question

ChemistryThermodynamicsJEE Main

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If is the initial temperature and is the final temperature, which of the following statements is correct? **[AIEEE 2006]**

Answer: (A)

Solution

In an isolated system, irreversible (free) expansion involves no external work and no heat exchange, so the temperature stays unchanged, . A reversible adiabatic expansion, however, does

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Question ID VK-134676