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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
__________ decreases during adiabatic throttling of a perfect gas.

Temperature
Entropy
Enthalpy
Pressure

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Chemical Engineering Thermodynamics
The unity of Planck's constant 'h' in the equation, E = hv is

J/s
J/kmol
Kmol/J
J.S

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Chemical Engineering Thermodynamics
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in

Enhanced COP
No change in the value of COP
Decreased COP
Increased or decreased COP ; depending upon the type of refrigerant

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Chemical Engineering Thermodynamics
What happens in a reversible adiabatic expansion process?

Pressure is constant
Heating takes place
Temperature is constant
Cooling takes place

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Chemical Engineering Thermodynamics
If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in

Neither A nor B
Both A & B
Enthalpy
Volume

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Chemical Engineering Thermodynamics
For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist at equilibrium is

X + 2
X
X + 3
X + 1

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