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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
The change in Gibbs freee energy for vaporisation of a pure substance is

Negative
May be positive or negative
Zero
Positive

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Chemical Engineering Thermodynamics
Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the

Mass and pressure both of the working fluid
Pressure of working fluid
Two temperatures only
Mass of the working fluid

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Chemical Engineering Thermodynamics
For an ideal gas, the enthalpy

Is a path function
Is independent of pressure
Decreases with rise in pressure
Increases with rise in pressure

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Chemical Engineering Thermodynamics
If we increase the pressure on a substance (which is at its triple point), then the triple point

May increase or decrease ; depends on the substance
Remains unchanged
Increases
Decreases

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Chemical Engineering Thermodynamics
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

More in liquid phase
Same in both the phases
More in vapour phase
Replaced by chemical potential which is more in vapour phase

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Chemical Engineering Thermodynamics
In which of the following reaction equilibria, the value of equilibrium constant Kp will be more than is Kc?

2SO₂ + O₂ ⇋ 2SO₃
2HI ⇋ H₂ + I₂
None of these
N₂O₄ ⇋ 2NO₂

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