Chemical Reaction Engineering A catalyst loses its activity due to 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 Agglomeration of metal particles caused by thermal sintering of the solid surface All of these Loss in surface area of the active component ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if None of these A catalyst is added The temperature is increased An inert gas is pumped keeping the temperature constant None of these A catalyst is added The temperature is increased An inert gas is pumped keeping the temperature constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Increases Remains unaltered Changes unpredictably Decreases Increases Remains unaltered Changes unpredictably 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 Volume of the reactor Total pressure of the system Temperature Initial concentration of N₂ and H₂ Volume of the reactor Total pressure of the system Temperature Initial concentration of N₂ and H₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt In the reactor At the outlet Averaged over the inlet and outlet At the inlet In the reactor At the outlet Averaged over the inlet and outlet At the inlet ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction Increases the activation energy Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction Increases the activation energy ANSWER DOWNLOAD EXAMIANS APP
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