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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
When a gas in a vessel expands, its internal energy decreases. The process involved is

Isothermal
Adiabatic
Irreversible
Reversible

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Chemical Engineering Thermodynamics
With increase in temperature, the internal energy of a substance

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

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Chemical Engineering Thermodynamics
The accentric factor of a materical, 'ω', is defined as ω = -log10(Prsat)Tr⁻¹ = 0.7, where, Prsat = reduced vapor pressure, Tr = reduced temperature. The value of accentric factor is always

< 1
< 3
> 2
> 1

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Chemical Engineering Thermodynamics
Reduced pressure of a gas is the ratio of its

Critical pressure to pressure
Pressure to critical pressure
Pseudocritical pressure to pressure
Pressure to pseudocritical pressure

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Chemical Engineering Thermodynamics
A solid is transformed into vapour without going to the liquid phase at

Always
Boiling point
Triple point
Below triple point

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Chemical Engineering Thermodynamics
All gases during throttling process at atmospheric temperature and pressure show a cooling effect except

O₂
CO₂
N₂
H₂

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MORE MCQ ON Chemical Engineering Thermodynamics

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