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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

Internal energy
Entropy
All of these
Gibbs free energy

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Chemical Engineering Thermodynamics
In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

More
Same
Unpredictable; depends on the particular reaction
Less

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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.

22.4
Data insufficient; can't be computed
448
224

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Chemical Engineering Thermodynamics
A nozzle is a device, which

Reduces kinetic energy and increases pressure
Increases kinetic energy and decreases pressure
Increases both kinetic energy and pressure
Reduces both kinetic energy and pressure

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Chemical Engineering Thermodynamics
Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

Easier plotting
Covering of wide range
Use of only one graph for all gases
More accurate plotting

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Chemical Engineering Thermodynamics
Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)?

Ordinary vapour compression cycle
Carnot cycle
Air cycle
Vapour compression with a reversible expansion engine

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