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  1. The first law of thermodynamics takes the form W = –∆H when applied to
    1. A closed system undergoing a reversible adiabatic process
    2. An open system undergoing an adiabatic process with negiigible changes in kinetic and potential energies
    3. A closed system undergoing a reversible constant volume process
    4. A closed system undergoing a reversible constant pressure process.
Correct Option: B

Steady flow equation is given be,
H1 + q = H2 + W
Adiabatic q = 0
H1 – H2 = W
W = -∆H



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