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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as

F = C - P - 2
P = F - C - 2
C = P - F + 2
P + F - C = 2

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Chemical Engineering Thermodynamics
Heat of reaction is

Dependent on temperature only
Dependent on pressure only
Dependent on both pressure and temperature
Independent of temperature changes

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Chemical Engineering Thermodynamics
Which of the following is not a unit of the equilibrium constant Kp? (where, Δx = number of moles of products number of moles of reactants)

(atm)Δx2, when Δx > 0
(atm)Δx, when Δx is negative
(atm)Δx, when Δx is positive
Dimensionless, when Δx = 0

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Chemical Engineering Thermodynamics
Which of the following has the minimum value of COP for a given refrigeration effect?

Air refrigeration cycle
Vapour-compression process with a reversible expansion engine
Ordinary vapour-compression cycle
Reverse Carnot cycle

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Chemical Engineering Thermodynamics
__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.

Bucket
Separating
A combination of separating & throttling
Throttling

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Chemical Engineering Thermodynamics
A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂.(where, P₁ and P₂ are initial and final pressures respectively)

Arithmetic
Harmonic
Geometric
Logarithmic

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