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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is

651
349
1000
667

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Chemical Engineering Thermodynamics
Number of degrees of freedom for a three phase system in equilibrium comprising of three non-reacting chemical species is

3
1
2

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Chemical Engineering Thermodynamics
In any spontaneous process, the __________ free energy decreases.

Gibbs
Both of the listed here
Neither A nor B
Helmholtz

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Chemical Engineering Thermodynamics
In an irreversible process

Tds - dE + dW< 0
DE - dW - Tds = 0
Tds - dT + dW< 0
Tds = dE - dW = 0

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Chemical Engineering Thermodynamics
For a constant volume process __________ by the system is used only to increase the internal energy.

Neither A nor B
Both A & B
Heat absorbed
Work done

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Chemical Engineering Thermodynamics
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

Superheated
Non-condensable
Desuperheated
None of these

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