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.Management Sciences
Category: Chemical Reaction
A second order reaction of the form A + B → C is called a pseudo-first order reaction, when____________________?
A. CA0 = CB0
B. CA0 > CB0
C. CB0 > CA0
D. CB0 ≥ CB0
Promoter is added to the catalyst to improve its____________________?
A. Porosity
B. Sensitivity
C. Surface area
D. None of these
Pick out the wrong statement ?
A. Autocatalytic reactions are exemplified by microbial fermentation reactions
B. The slowest step has the greatest influence on the overall reaction rate in case of an
irreversible series reaction
C. The fractional conversion at any time is same for both the constant as well as the variable
volume system in case of an irreversible unimolecular type first order reaction
D. Hydrolysis of ester in presence of alkali or acid is a zero order reaction
A trickle bed reactor is the one, which_________________?
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)
When all the limiting reactant is consumed in the reaction, the operational yield _______________ the relative yield?
A. Is greater than
B. Is smaller than
C. Equals
D. Can be either greater or smaller than (depends on the type of reaction)
The reaction in which one of the products of reaction acts as a catalyst is called a/an ______________ reaction?
A. Biochemical
B. Photochemical
C. Catalytic
D. Autocatalytic
Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?
A. Increasing the concentration of one of the reactants
B. Increasing the concentration of one or more of the products
C. Removal of at least one of the products at regular interval
D. None of these
For the same residence time, which one will give the maximum conversion ?
A. Single stirred tank (v = 5 litres)
B. Two stirred tank (each of 2.5 litres) in series
C. Stirred tank followed by tubular flow reactor (each of 2.5 litres)
D. Single tubular flow reactor (v = 5 litres)
The use of space time is preferred over the mean residence time in the design of a/an____________________?
A. Batch reactor
B. Ideal tubular-flow reactor
C. Slurry reactor
D. CSTR
Pick out the wrong statement ?
A. ‘Hold back’ is defined as the fraction of material that stays longer than the mean residence time
B. Study of non-ideal flow reactor is done experimentally by stimulus-response technique
C. For studying a chemical reaction, it is desirable to monitor the reactants during initial stages
and the products during the final stages of reaction
D. A batch reactor cannot be used to study the kinetics of catalytic reaction
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