Chemical Reaction Engineering The exit age distribution curve E(t) for an ideal CSTR with the average residence time, τ, is given by E-t/τ/T 1 - (e-t/τ/T) 1 - e-t/τ E-t/τ E-t/τ/T 1 - (e-t/τ/T) 1 - e-t/τ E-t/τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good. τ and θ are always equal τ = θ , for a non-isothermal reactor τ = θ , when the fluid density changes in the reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant τ and θ are always equal τ = θ , for a non-isothermal reactor τ = θ , when the fluid density changes in the reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of staged packed bed reactors carrying out exothermic reaction, use High recycle for pure gas Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature Plug flow for dilute liquid requiring no large preheating of feed All of these High recycle for pure gas Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature Plug flow for dilute liquid requiring no large preheating of feed All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to (1/2)n.CA (CA)n (CA)1/2n (CA)1/n (1/2)n.CA (CA)n (CA)1/2n (CA)1/n ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Velocity of a chemical reaction Decreases with increase in temperature Decreases with increase of reactant concentration Increases with increase of pressure of reactants for all reactions None of these Decreases with increase in temperature Decreases with increase of reactant concentration Increases with increase of pressure of reactants for all reactions None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is used for calcination of limestone and dolomite in industrial practice? Fixed bed reactor None of these Fluidised bed reactor Moving bed reactor Fixed bed reactor None of these Fluidised bed reactor Moving bed reactor ANSWER DOWNLOAD EXAMIANS APP
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