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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Sound waves propagation in air exemplifies an __________ process.

Adiabatic
Isothermal
None of these
Isometric

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Chemical Engineering Thermodynamics
Activity co-efficient is a measure of the

Departure from ideal solution behaviour
Departure of gas phase from idea] gas law
Vapour pressure of liquid
None of these

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Chemical Engineering Thermodynamics
The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

Decrease in enthalpy corresponding to evolution of heat
Decrease of entropy
Increase in enthalpy corresponding to absorption of heat
No change in enthalpy

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Chemical Engineering Thermodynamics
Mollier chart is a __________ plot.

Enthalpy vs entropy
Pressure vs volume
Pressure vs enthalpy
Temperature vs entropy

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Chemical Engineering Thermodynamics
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

U and S both decreases
U is constant but S decreases
Its internal energy (U) decreases and its entropy (S) increases
U decreases but S is constant

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Chemical Engineering Thermodynamics
While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

Unity
Negative
Constant
Infinity

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