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.Management Sciences
Category: Chemical Reaction
In the reversible reaction of the type, A + B ⇌ AB, in general__________________?
A. Both forward and backward reactions will be exothermic
B. Neither of the reactions will be endothermic
C. The combination reaction will be exothermic, while the dissociation reaction will be
endothermic
D. The combination reaction will be endothermic, while the dissociation reaction will be
exothermic
Catalyst is a substance, which ________________ chemical reaction?
A. Increases the speed of a
B. Decreases the speed of a
C. Can either increase or decrease the speed of a
D. Alters the value of equilibrium constant in a reversible
The enzyme which can catalyse the conversion of glucose to ethyl alcohol is ___________________?
A. Invertase
B. Maltase
C. Diastase
D. Zymase
Pick out the wrong statement ?
A. For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank
reactor provides higher overall selectivity
B. For an ideal mixed reactor at steady state, the exit stream has the same composition as fluid
within the reactor and the space time is equivalent to holding time for constant density system
C. Plug flow reactor (PFR) is always smaller than mixed reactor for all positive reaction orders
for a particular duty
D. Reaction rate does not decrease appreciably as the reaction proceeds in case of an
autocatalytic reaction
The rate of reaction does not decrease appreciably as the reaction proceeds in case of ______________ reactions?
A. Autocatalytic
B. Exothermic
C. Endothermic
D. Autothermal
The equilibrium constant of a catalytic chemical reaction _______________ due to the presence of?
a catalyst.
A. Increases
B. Decreases
C. Remain unaffected
D. Unpredictable from the data
In case of physical adsorption, the heat of adsorption is of the order of _____________ kcal/kg mole?
A. 100
B. 1000
C. 10000
D. 100000
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the ________________ diffusion?
A. Film
B. Ash layer
C. Pore
D. None of these
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