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In which situation is the internal energy of a system unchanged?

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Single Answer MCQ

Q-00054755

Heat is absorbed and work is done on the system

Heat is released and work is done by the system

No heat transfer and no work is done

Work is done on the system, but no heat transfer occurs

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Q1.

What is the change in internal energy when no heat is added to the system, but work is done on it?

Q2.

If a system does work on its surroundings and no heat is exchanged, what equation describes the change in internal energy?

Q3.

When heat is removed from a system and no work is done, what can be said about the change in internal energy?

Q4.

What type of wall would a system have if it cannot exchange heat but can do work?