Chemical Reaction Engineering A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ∝ 1/CA Independent of temperature None of these ∝ CA ∝ 1/CA Independent of temperature None of these ∝ CA ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A stirred tank reactor compared to tubular-flow reactor provides Higher overall selectivity for a first order consecutive reaction Permits operation at the optimum temperature for a long reaction time More uniform operating conditions All of these Higher overall selectivity for a first order consecutive reaction Permits operation at the optimum temperature for a long reaction time More uniform operating conditions All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of staged packed bed reactors carrying out exothermic reaction, use Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature High recycle for pure gas All of these Plug flow for dilute liquid requiring no large preheating of feed Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature High recycle for pure gas All of these Plug flow for dilute liquid requiring no large preheating of feed ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a __________ order reaction, the units of rate constant and rate of reaction are the same. Zero First Second Fractional Zero First Second Fractional 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, 15, 5 5, 10, 15 10, 5, 15 15, 10, 5 10, 15, 5 5, 10, 15 10, 5, 15 15, 10, 5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by keff = (kkg)1/2 keff = (k+ kg)/2 keff = k + kg 1/keff = 1/k + 1/kg keff = (kkg)1/2 keff = (k+ kg)/2 keff = k + kg 1/keff = 1/k + 1/kg ANSWER DOWNLOAD EXAMIANS APP
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