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.Management Sciences
Category: Chemical Reaction
Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes ?
A. Strong pore diffusion control and mass transfer not controlling
B. Both pore diffusion and mass transfer not controlling
C. Both pore diffusion and mass transfer controlling
D. Mass transfer controlling
The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called_________________?
A. A ferment or an enzyme
B. Haemoglobin
C. Fungi
D. None of these
For the non catalytic reaction of particles with surrounding fluid, the same needed to achieve the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the ________________ is the controlling resistance?
A. Film diffusion
B. Diffusion through ash layer
C. Chemical reaction
D. Either A., B. or C.
Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of _____________________ poison?
A. Deposited
B. Chemisorbed
C. Selectivity
D. Stability
Pick out the wrong statement?
A. The integral method of analysing kinetic data is used when the data is scattered
B. The differential method of analysing kinetic data requires more accurate or larger amounts of data
C. When the reaction rate is independent of temperature, the reaction is said to be of zero order
D. The ratio of volumes of plug flow reactor to that of mixed reactor is always less than one for identical feed composition, flow rate, conversion and for all positive reaction orders
For high conversion in a highly exothermic solid catalysed reaction, use a ______________ bed reactor?
A. Fixed
B. Fluidised bed reactor followed by a fixed
C. Fixed bed reactor followed by a fluidised
D. Fluidised
Sometimes, batch process is preferred over continuous process, when the product___________________?
A. Quality & yield cannot be achieved in continuous processes, because of long residence time
B. Sales demand is fluctuating
C. Both A. & B.
D. Neither A. nor B.
The catalyst in a first order chemical reaction changes the_________________?
A. Equilibrium constant
B. Activation energy
C. Heat of formation of the product
D. Heat of reaction
The reaction between oxygen and organic material is a/an _____________ reaction?
A. Exothermic
B. Endothermic
C. Biochemical
D. Photochemical
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