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Chemical Reaction Engineering

Chemical Reaction Engineering
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is

Two
Three
One
Zero

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Chemical Reaction Engineering
The excess energy of the reactants required to dissociate into products is known as the __________ energy.

Threshold
Binding
Activation
Thermal

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Chemical Reaction Engineering
For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. If the volume of the reactor is suddenly reduced to l/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times.

43846
43838
8
16

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Chemical Reaction Engineering
Fluidised bed reactor is characterised by

Very small pressure drop
Absence of continuous catalyst regeneration facility
Uniformity of temperature
Comparatively smaller equipment

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Chemical Reaction Engineering
Which of the following will give maximum gas conversion?

Plug-flow catalytic reactor
Fixed bed reactor
Fluidised bed reactor
Semi-fluidised bed reactor

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Chemical Reaction Engineering
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Tan T/T
Tan hT/T
None of these
Tan hT/tan T

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