Chemical Reaction Engineering For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single PFR of volume V PFR of volume V/X CSTR of volume V CSTR of volume V/X PFR of volume V PFR of volume V/X CSTR of volume V CSTR of volume V/X ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Diffusion through ash layer Chemical reaction Film diffusion Either A, B or C Diffusion through ash layer Chemical reaction Film diffusion Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Sometimes, batch process is preferred over continuous process, when the product Both A & B Neither A nor B Sales demand is fluctuating Quality & yield can not be achieved in continuous processes, because of long residence time Both A & B Neither A nor B Sales demand is fluctuating Quality & yield can not be achieved in continuous processes, because of long residence time ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions. Endothermic Exothermic Autocatalytic Autothermal Endothermic Exothermic Autocatalytic Autothermal ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The space time is equivalent to the holding time in a steady state mixed reactor for Gas reactions with changing no. of moles Non-isothermal gas reaction Constant fluid density systems Variable fluid density systems Gas reactions with changing no. of moles Non-isothermal gas reaction Constant fluid density systems Variable fluid density systems ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is 1 0 3 2 1 0 3 2 ANSWER DOWNLOAD EXAMIANS APP
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