Chemical Reaction Engineering A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be τ/0.693 2τ 0.5τ 0.693τ τ/0.693 2τ 0.5τ 0.693τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The order of a chemical reaction is None of these Never fractional Always equal to the total stoichiometric number of reactants An experimentally determined quantity None of these Never fractional Always equal to the total stoichiometric number of reactants An experimentally determined quantity ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Knudsen diffusion is directly proportional to 1/√T T √T T₂ 1/√T T √T T₂ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is 0.5 Data insufficient to calculate 0.875 0.425 0.5 Data insufficient to calculate 0.875 0.425 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) 1000 600 500 400 1000 600 500 400 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism. Proportional to Independent of Inversely proportional to Proportional to the square of Proportional to Independent of Inversely proportional to Proportional to the square of ANSWER DOWNLOAD EXAMIANS APP
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