Chemical Reaction Engineering To maximise the formation of R in the simultaneous reactionA + B → R , rR = 2CA0.5.CB2 A + B → S , rS = 1.5 CA . CB We should have High CA, high CB High CA, low CB Low CA, low CB Low CA, high CB High CA, high CB High CA, low CB Low CA, low CB Low CA, high CB ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Helium-mercury method can be used to determine the __________ of the catalyst particle. Pore volume Solid density Porosity All of these Pore volume Solid density Porosity All of these 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 1/keff = 1/k + 1/kg keff = k + kg keff = (k+ kg)/2 keff = (kkg)1/2 1/keff = 1/k + 1/kg keff = k + kg keff = (k+ kg)/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a semi-batch reactor Both the reactants flow counter-currently Velocity of reaction can be controlled Maximum conversion can be controlled Residence time is constant Both the reactants flow counter-currently Velocity of reaction can be controlled Maximum conversion can be controlled Residence time is constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two equal sized CSTR. The conversion is Same whether they are connected in series or in parallel More when they are connected in parallel Less when they are connected in series More when they are connected in series Same whether they are connected in series or in parallel More when they are connected in parallel Less when they are connected in series More when they are connected in series ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Semibatch reactor is preferred, when a/an A highly exothermic reaction is to be controlled Undersirable side reaction (at high concentration of one of the reactants) is to be avoided All of these A gas is to be reacted with liquid (e.g. hydrogenation of fat) A highly exothermic reaction is to be controlled Undersirable side reaction (at high concentration of one of the reactants) is to be avoided All of these A gas is to be reacted with liquid (e.g. hydrogenation of fat) ANSWER DOWNLOAD EXAMIANS APP
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