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Chemical Reaction Engineering

Chemical Reaction Engineering
Design of heterogeous catalytic reactor involves consideration of __________ steps.

Neither A nor B
Both A & B
Only physical
Only chemical

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Chemical Reaction Engineering
For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single

PFR of volume V
CSTR of volume V/X
CSTR of volume V
PFR of volume V/X

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Chemical Reaction Engineering
In an exothermic chemical reaction, the reactants compared to the products have

More energy
Same energy
Higher temperature
Less energy

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Chemical Reaction Engineering
Autocatalytic reactions are best carried out in a

CSTR
CSTR in series
Plug flow reactor
Recycle reactor

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Chemical Reaction Engineering
For a tubular flow reactor with uniform concentration and temperature, the independent variable is

Diameter
Length
None of these
Time

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Chemical Reaction Engineering
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by

1/keff = 1/k + 1/kg
keff = (kkg)1/2
keff = k + kg
keff = (k+ kg)/2

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