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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 exp (-t/τ)
1/τ (-t/τ)
Exp(-t/τ)

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Chemical Reaction Engineering
A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

Data insufficient, can
Either of the arrangement A or B will give the same yield
Smaller reactor followed by larger one
Large reactor followed by smaller one

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Chemical Reaction Engineering
Transition state theory gives the rate constant as

K α T . e-E/RT
K α e-E/RT
K α √T . e-E/RT
K α eE/RT

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Chemical Reaction Engineering
The space time is equivalent to the holding time in a steady state mixed reactor for

Non-isothermal gas reaction
Constant fluid density systems
Variable fluid density systems
Gas reactions with changing no. of moles

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Chemical Reaction Engineering
The dimensions of rate constant for reaction 3A → B are (l/gm mole)/min. Therefore the reaction order is

3
2
1

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Chemical Reaction Engineering
From among the following, choose one which is not an exothermic process.

Oxidation of sulphur
Methanol synthesis
Ammonia synthesis
Catalytic cracking

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