Chemical Engineering Thermodynamics
The third law of thermodynamics states that the

None of these
Heat transfer from low temperature to high temperature source is not possible without external work
Heat capacity of a crystalline solid is zero at absolute zero temperature
Gases having same reduced properties behave similarly

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Chemical Engineering Thermodynamics
High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

Δ H ≠ 0 and ΔS = 0
Δ H = 0 and ΔS ≠ 0
Δ H ≠ 0 and ΔS ≠ 0
Δ H = 0 and ΔS = 0

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