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Chemical Reaction Engineering

Chemical Reaction Engineering
The residence time distribution of an ideal CSTR is

Τ exp (-t/τ)
1/τ (-t/τ)
Exp(-t/τ)
1/τ exp (-t/τ)

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Chemical Reaction Engineering
'Unreacted core model' represents the reaction involving

None of these
Combustion of coal particles
Manufacture of carbon disulphide from elements
Roasting of sulphide ores

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Chemical Reaction Engineering
The dispersion number of perfect mixed flow is

∞
> 150
< 2100

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Chemical Reaction Engineering
With increase in temperature, the rate constant obeying Arhenious equation

Decreases
Decreases exponentially
Can either increase or decrease ; depends on the frequency factor
Increases

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Chemical Reaction Engineering
The following gas phase reactions are carried out isothermally in a CSTR.A → 2R ; r₁ = K₁pA ;K₁ = 20mole/(sec.m³ bar)A → 3S ; r₂ = K₂ pA ;K₂ = 40mole/ (sec.m³ .bar)What is the maximum possible value of FR(mole/sec.) ?

43832
43833
2
43864

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Chemical Reaction Engineering
The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is

15, 10, 5
10, 15, 5
5, 10, 15
10, 5, 15

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