Engineering Thermodynamics
The condition for the reversibility of a cycle is

All the processes, taking place in the cycle of operation, must be extremely slow
The working parts of the engine must be friction free
The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process
All of these

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Engineering Thermodynamics
According to Dalton's law, the total pressure of the mixture of gases is equal to

Greater of the partial pressures of all
Average of the partial pressures of all
Sum of the partial pressures of all
Sum of the partial pressures of all divided by average molecular weight

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Engineering Thermodynamics
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

Carbonisation
Fractional distillation
Full distillation
Cracking

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