Chemical Reaction Engineering In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) A-N A+N A N A-N A+N A N ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A backmix reactor Is same as ideal stirred tank reactor Is most suitable for gas phase reaction Employs mixing in axial direction only Is same as plug-flow reactor Is same as ideal stirred tank reactor Is most suitable for gas phase reaction Employs mixing in axial direction only Is same as plug-flow reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.) Thiele modulus (L√(k/D1) None of these Reduced time (vt/V) Reactor dispersion number (D/vL) Thiele modulus (L√(k/D1) None of these Reduced time (vt/V) Reactor dispersion number (D/vL) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor suffers from following disadvantage. All of these High shutdown time requirement for emptying, cleaning and refilling High labour and handling cost Poor product quality control All of these High shutdown time requirement for emptying, cleaning and refilling High labour and handling cost Poor product quality control ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Photo-chemical reactions occur in presence of Monochromatic radiation only Sunlight Darkness Solid catalysts Monochromatic radiation only Sunlight Darkness Solid catalysts ANSWER DOWNLOAD EXAMIANS APP
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