Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to (E + ED) where ED is activation due to diffusion ED/2 (E + ED)/2 The intrinsic activation energy E (E + ED) where ED is activation due to diffusion ED/2 (E + ED)/2 The intrinsic activation energy E ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus) Tan T/T Tan hT/T Tan hT/tan T None of these Tan T/T Tan hT/T Tan hT/tan T None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The single parameter model proposed for describing non-ideal flow is the __________ model. Tank in series Dispersion Neither A nor B Both A & B Tank in series Dispersion Neither A nor B Both A & B 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 keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = (kkg)1/2 keff = k + kg keff = (k+ kg)/2 1/keff = 1/k + 1/kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is 1 -0.25 -0.5 1 -0.25 -0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is characterised by Very low conversion Variation in extent of reaction and properties of the reaction mixture with time Variation in reactor volume Constant residence time Very low conversion Variation in extent of reaction and properties of the reaction mixture with time Variation in reactor volume Constant residence time ANSWER DOWNLOAD EXAMIANS APP
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