Chemical Reaction Engineering A catalyst loses its activity due to Agglomeration of metal particles caused by thermal sintering of the solid surface All of these Loss in surface area of the active component Covering of the catalytic active sites by a foregin substance Agglomeration of metal particles caused by thermal sintering of the solid surface All of these Loss in surface area of the active component Covering of the catalytic active sites by a foregin substance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Collision frequency increases Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Value of threshold energy decreases Collision frequency increases Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Value of threshold energy decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In the gaseous phase ammonia formation reaction (N₂ + 3H₂ ⇋ 2NH₃), the value of the equilibrium constant depends on the Temperature Total pressure of the system Initial concentration of N₂ and H₂ Volume of the reactor Temperature Total pressure of the system Initial concentration of N₂ and H₂ Volume of the reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Maximum equilibrium conversion for endothermic reaction is obtained at the __________ temperature. Highest possible Intermediate Room Lowest possible Highest possible Intermediate Room Lowest possible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order. First Zero Second None of these First Zero Second None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering When a high liquid hold up is required in a reactor for gas liquid reaction, use __________ coloumn. Bubble Tray Spray Packed Bubble Tray Spray Packed ANSWER DOWNLOAD EXAMIANS APP
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