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Chemical Reaction Engineering

Chemical Reaction Engineering
If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible.

< 0.5
0
∞
> 0.5

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Chemical Reaction Engineering
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

Pore
None of these
Film
Ash layer

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Chemical Reaction Engineering
For a first order reaction carried out in a plug flow reactor, the space time is

K In C/C0
K In C0/C
1/K In C0/C
1/K In C/C0

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Chemical Reaction Engineering
If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to

(CA)1/2n
(CA)n
(CA)1/n
(1/2)n.CA

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Chemical Reaction Engineering
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

Same in both the reactors
Higher in CSTR
Higher in P.F. reactor
Data insufficient; can't be predicted

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Chemical Reaction Engineering
The unit of frequency factor in Arhenious equation is

Same as that of rate constant
None of these
Dimensionless
Same as that of activation energy

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MORE MCQ ON Chemical Reaction Engineering

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