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.Management Sciences
Category: Chemical Reaction
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
A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is ___________________?
A. 0.33
B. 0.5
C. 1
D. Data insufficient, can’t be predicted
If CA is the quantity of reactants initially present, the quantity left after ‘n’ half periods will be equal to__________________?
A. (CA/2)n
B. (½)n CA
C. (CA/2)1/n
D. (CA)1/2n
Differential method for analysing the kinetic data is used ___________________?
A. For testing complicated mechanisms
B. When the data are scattered
C. When rate expressions are very simple
D. None of these
A photochemical reaction is _______________?
A. Accompanied with emission of light
B. Catalysed by light
C. Initiated by light
D. All A., B. & C.
The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?
A. Activation
B. Potential
C. Binding
D. Threshold
Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the ___________________?
A. Activation energy
B. Equilibrium constant
C. Heat of reaction
D. None of these
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