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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Melting of ice is an example of an __________ process.

Adiabatic
None of these
Isothermal
Isometric

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Chemical Engineering Thermodynamics
Entropy change in case of reversible adiabatic process is

Minimum
Zero
Maximum
Indeterminate

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Chemical Engineering Thermodynamics
The equation, PV = nRT, is best obeyed by gases at

None of these
Low pressure & high temperature
Low pressure & low temperature
High pressure & low temperature

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Chemical Engineering Thermodynamics
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is

More pronounced
Data insufficient, can't be predicted
Less pronounced
Equal

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Chemical Engineering Thermodynamics
When a gas is expanded from high pressure region to low pressure region ; temper -ature change occurs. This phenomenon is related to the

Third law of thermodynamics
Gibbs-Helmholtz equation
Joule-Thomson effect
Gibbs-Duhem equation

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Chemical Engineering Thermodynamics
Throttling (Joule-Thomson effect) process is a constant __________ process.

Entropy
Enthalpy
None of these
Pressure

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