Chemical Engineering Thermodynamics
A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

224
22.4
Data insufficient; can't be computed
448

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Chemical Engineering Thermodynamics
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?

Air refrigeration cycle
Vapor compression cycle using expansion engine
Carnot refrigeration cycle
Vapor compression cycle using expansion valve

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