Chemical Reaction Engineering Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if An inert gas is pumped keeping the temperature constant None of these The temperature is increased A catalyst is added An inert gas is pumped keeping the temperature constant None of these The temperature is increased A catalyst is added ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is 10, 5, 15 15, 10, 5 10, 15, 5 5, 10, 15 10, 5, 15 15, 10, 5 10, 15, 5 5, 10, 15 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The units of frequency factor in Arhenious equation Depend on temperature, pressure etc. of the reaction Are cycles per unit time Depend on the order of the reaction Are the same as those of the rate constant Depend on temperature, pressure etc. of the reaction Are cycles per unit time Depend on the order of the reaction Are the same as those of the rate constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a zero order reaction, the concentration of product increases with the Increase in initial concentration Total pressure Decrease in total pressure Increase of reaction time Increase in initial concentration Total pressure Decrease in total pressure Increase of reaction time ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering "A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction." Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction Inner catalyst core of radius 7R/8 does not participate in reaction Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction Inner catalyst core of radius 7R/8 does not participate in reaction Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst loses its activity due to Loss in surface area of the active component All of these Covering of the catalytic active sites by a foregin substance Agglomeration of metal particles caused by thermal sintering of the solid surface Loss in surface area of the active component All of these Covering of the catalytic active sites by a foregin substance Agglomeration of metal particles caused by thermal sintering of the solid surface ANSWER DOWNLOAD EXAMIANS APP
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