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ΔU is equal to

1. Isochoric work
2. Isobaric work
3. Adiabatic work
4. Isothermal work

Correct answer: Adiabatic work

Solution

In an adiabatic process q = 0, so by the first law delta-U = q + w = w; thus delta-U equals the adiabatic work. (In an isothermal process of an ideal gas delta-U = 0.) Correct option: Adiabatic work.

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