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Chemical Reaction Engineering

Chemical Reaction Engineering
Holding time for flow reactors is __________ the space time, for constant fluid density

Triple
Equal to
None of these
Double

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Chemical Reaction Engineering
Shift conversion reaction

Converts N₂ and H₂ into NH₃
Converts CO to CO₂ with steam
Is highly exothermic
Is non-catalytic

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

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Chemical Reaction Engineering
Half life period of a chemical reaction is

Half of the space time of a reaction
Half of the residence time of a reaction
None of these
The time required to reduce the concentration of the reacting substance to half its initial value

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Chemical Reaction Engineering
The irreversible reaction is a special case of reversible reaction, if the

Reactant concentration at equilibrium condition is zero
All of these
Conversion of the reactant at equilibrium condition is zero
Equilibrium constant is 1

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Chemical Reaction Engineering
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

Increases
Remains unaltered
Changes unpredictably
Decreases

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