A. When the data are scattered
B. For testing specific mechanisms with simple rate expressions
C. Both A. and B.
D. None of these
A. Increase of reaction time
B. Increase in initial concentration
C. Total pressure
D. Decrease in total pressure
A. Temperature should be high in the beginning and decreased towards the end of the reaction
B. Very low temperature should be used throughout the reaction
C. Very high temperature should be used throughout the reaction
D. None of these
A. Inner catalyst core of radius R/8 does not participate in reaction
B. Inner catalyst core of radius R/2 does not participate in reaction
C. Inner catalyst core of radius 7R/8 does not participate in reaction
D. Effectiveness factor for a zero order reaction cannot be 7/8 as it must always be 1
A. More than
B. Less than
C. Same as
D. Data insufficient; can’t be predicted
A. Increases
B. Decreases
C. Remain unaffected
D. Unpredictable from the data
A. Has altogether three streams either entering or leaving
B. Processes three reactants at different flow rates
C. Processes three reactants with same flow rate
D. Employs all the three phases (i.e. solid, liquid and gas)