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 = k + kg keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = k + kg keff = (kkg)1/2 keff = (k+ kg)/2 1/keff = 1/k + 1/kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant K of a chemical reaction depends on Temperature and pressure Temperature only Pressure only Ratio of reactants Temperature and pressure Temperature only Pressure only Ratio of reactants ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following will give maximum gas conversion? Plug-flow catalytic reactor Fluidised bed reactor Semi-fluidised bed reactor Fixed bed reactor Plug-flow catalytic reactor Fluidised bed reactor Semi-fluidised bed reactor Fixed bed reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes. 4 6 8 3 4 6 8 3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship. T ∝ 1/an - 1 T ∝ an T ∝ 1/an T ∝ 1/an + 1 T ∝ 1/an - 1 T ∝ an T ∝ 1/an T ∝ 1/an + 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called Relative yield Selectivity None of these Operational yield Relative yield Selectivity None of these Operational yield ANSWER DOWNLOAD EXAMIANS APP
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