Chemical Engineering Thermodynamics
A Carnot cycle consists of the following steps :

Two isothermals and two isentropics
Two isochorics and two isobarics
Two isobarics and two isothermals
Two isothermals and two isochorics

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Chemical Engineering Thermodynamics
Which one is true for a throttling process?

The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity
The inversion temperature is same for all gases
The inversion temperature is different for different gases
A gas may have more than one inversion temperatures

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Chemical Engineering Thermodynamics
It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions.

The amount of work needed is path dependent
The amount of work needed is independent of path
More information is needed to conclude anything about the path dependence or otherwise of the work needed
Work alone can not bring out such a change of state

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