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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 2
11.
Effective diffusivity (DE) in a catalyst pellet is related to molecular diffusivity (DN) and Knudsen diffusivity (DK) as
DE = DM + DK
DE = DM . DE
DE = DN/DE
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
A photochemical reaction is __________ light.
initiated by
accompanied with emission of
catalysed by
used to convert heat energy into
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Pick out the wrong statement.
In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time.
In a semi-batch reactor, one reactant is charged batchwise, while the other reactant is fed continuously.
In a continuous flow reactor, uniform concentration can not be maintained throughout the vessel even in a well agitated system.
In a continuous flow reactor, both the reactants and the products flow out continuously.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.
adiabatic
isothermal
non-adiabatic
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
'Unreacted core model' represents the reaction involving
combustion of coal particles.
roasting of sulphide ores.
manufacture of carbon disulphide from elements.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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