Chemical Reaction Engineering Mechanisms Catalyst Deactivation Online Exam Quiz
Chemical Reaction Engineering Mechanisms Catalyst Deactivation GK Quiz. Question and Answers related to Chemical Reaction Engineering Mechanisms Catalyst Deactivation. MCQ (Multiple Choice Questions with answers about Chemical Reaction Engineering Mechanisms Catalyst Deactivation
If the rate of deactivation is given by –frac{da}{dt} = 0.0064 day-1, the expression relating activity and time is ___
Options
A : a = 0.0064t
B : a = 1-0.0064t
C : a = t
D : a = 0.0064-t
Which of the following represents series type deactivation model? (Where R is the product and P is the poison)
Options
A : A ? R ? P?
B : A ? P?
C : A ? R + P?
D : A ? R, A ? P
The catalyst deactivation caused by deposition on surface and pores of catalyst is called ____
Options
A : Adsorption
B : Regeneration
C : Fouling
D : Desorption
The rate expression for independent deactivation for batch solids is ____
Options
A : ln(lnfrac{C_A}{C_{A?}}) = ln frac{Wk’}{Vk_d} – kdt
B : ln frac{C_A}{C_{A?}} = ln frac{Wk’}{Vk_d} – kdt
C : lnln frac{C_A}{C_{A?}} = ln frac{Wk’}{Vk_d}
D : lnln frac{C_A}{C_{A?}} = frac{Wk’}{Vk_d} – kdt
The slope of the curve of ln(lnfrac{C_A}{C_{A?}}) and t for batch solid – fluid independent deactivation system is ___
Options
A : ln(lnkd)
B : ln(kd)
C : kd
D : -kd
Which of the following reactor arrangements causes fast deactivation?
Options
A : Mixed flow for fluid
B : Plug flow for fluid
C : Fluidised bed reactor
D : Batch for fluid and solid
The activity of a catalyst at a time t = 0 is ____
Options
A : Negative
B : Zero
C : Unity
D : ?
The activity of a catalyst pellet is defined as the ratio of ___
Options
A : Rate of adsorption of reactants to the catalyst surface to the rate at which the catalytic pellet converts the reactant
B : Rate at which the catalytic pellet converts the reactant to the rate of adsorption of reactants to the catalyst surface
C : Rate at which the catalytic pellet converts the reactant to the rate of reaction with a fresh pellet
D : The rate of reaction with a fresh pellet to the rate at which the catalytic pellet converts the reactant
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