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)/2 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line? XA(1 - XA)Vs τ XA Vs ln τ XA/(1 - XA)Vs τ XA Vs . τ XA(1 - XA)Vs τ XA Vs ln τ XA/(1 - XA)Vs τ XA Vs . τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇋ 2NH₃. Remains unchanged Decreases Increases Unpredictable from the data Remains unchanged Decreases Increases Unpredictable from the data ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is 3 0 2 1 3 0 2 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 None of these Relative yield Selectivity Operational yield None of these Relative yield Selectivity Operational yield ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The use of space time is preferred over the mean residence time in the design of a/an Batch reactor Ideal tubular-flow reactor Slurry reactor CSTR Batch reactor Ideal tubular-flow reactor Slurry reactor CSTR ANSWER DOWNLOAD EXAMIANS APP
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