Chemical Reaction Engineering Which of the following will give maximum gas conversion? Plug-flow catalytic reactor Fixed bed reactor Semi-fluidised bed reactor Fluidised bed reactor Plug-flow catalytic reactor Fixed bed reactor Semi-fluidised bed reactor Fluidised bed reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes. 16 12 4 8 16 12 4 8 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the Catalyst size is reduced or the catalyst diffusivity is increased Catalyst size is increased or the catalyst diffusivity is reduced Catalyst size is increased or the catalyst diffusivity is increased Catalyst size is reduced or the catalyst diffusivity is reduced Catalyst size is reduced or the catalyst diffusivity is increased Catalyst size is increased or the catalyst diffusivity is reduced Catalyst size is increased or the catalyst diffusivity is increased Catalyst size is reduced or the catalyst diffusivity is reduced ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering On application of pressure to the equilibrium system, ice ⇋ water; which of the following phenomenon will occur? Equilibrium will not be attained More ice will be formed More water will be formed Water will evaporate Equilibrium will not be attained More ice will be formed More water will be formed Water will evaporate 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.) 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) Thiele modulus (L√(k/D1) None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A catalyst in a chemical reaction Alters the reaction mechanism Decreases the activation energy Increases the frequency of collisions of reacting species All of these Alters the reaction mechanism Decreases the activation energy Increases the frequency of collisions of reacting species All of these ANSWER DOWNLOAD EXAMIANS APP
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