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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is

R log10 4
Cv loge 4
R loge 4
Cv log10 4

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Chemical Engineering Thermodynamics
Co-efficient of Performance (COP) of a refrigerator is the ratio of the

Refrigeration obtained to the work required
Lower to higher temperature
Work required to refrigeration obtained
Higher to lower temperature

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Chemical Engineering Thermodynamics
Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

More than
Same as
Less than
Half

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Chemical Engineering Thermodynamics
Heat is added at constant pressure in an ideal __________ cycle.

Rankine
Both B and C
Brayton
Stirling

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Chemical Engineering Thermodynamics
Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

DE = Tds - PdV
DQ = CvdT + PdV
DQ = CpdT + Vdp
Tds = dE - PdV

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Chemical Engineering Thermodynamics
When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

Arrehenius hypothesis
Kopp's rule
Le-Chatelier principle
Law of corresponding state

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