Engineering Thermodynamics
The door of a running refrigerator inside a room was left open. Which of the following statements is correct?

The room will be gradually warmed up
The room will be cooled very slightly
The temperature of the air in room will remain unaffected
The room will be cooled to the temperature inside the refrigerator

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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

Full distillation
Cracking
Carbonisation
Fractional distillation

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