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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
Double
None of these

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Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

High temperature in a CSTR
Low temperature in a PFR
Low temperature in a CSTR
High temperature in a PFR

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Chemical Reaction Engineering
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.

12
18
6
24

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Chemical Reaction Engineering
Space time in flow reactor is

A measure of its capacity
Usually equal to the residence time
The reciprocal of the space velocity
Both A and B

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Chemical Reaction Engineering
Study of chemical kinetics is the easiest in the case of __________ reactions.

Surface
Reversible
Side
Irreversible

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

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

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