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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
For an ideal liquid solution, which of the following is unity?

Fugacity
Activity
Activity co-efficient
Fugacity co-efficient

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Chemical Engineering Thermodynamics
Entropy change for an irreversible isolated system is

> 0
< 0
∞

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Chemical Engineering Thermodynamics
With increase in temperature, the atomic heat capacities of all solid elements

Decreases
Decreases linearly
Remains unchanged
Increases

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Chemical Engineering Thermodynamics
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the

Neither A nor B
Hot reservoir approaches infinity
Either A or B
Cold reservoir approaches zero

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Chemical Engineering Thermodynamics
The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature)

√(2KT/m)
√(6KT/m)
3KT/m
√(3KT/m)

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Chemical Engineering Thermodynamics
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

1.572
4.238
1.9398
3.389

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