Chemical Reaction Engineering The increase in the rate of reaction with temperature is due to Increase in the number of effective collisions Decrease in activation energy Increase in the average kinetic energy of the reacting molecules None of these Increase in the number of effective collisions Decrease in activation energy Increase in the average kinetic energy of the reacting molecules None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are Equal in size Of different sizes None of these Of such size that the ratio of their volumes is < 5 Equal in size Of different sizes None of these Of such size that the ratio of their volumes is < 5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1m³ /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of 44015 7 6 3 44015 7 6 3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is 2 11 22 4 2 11 22 4 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ∝ 1/CA ∝ CA Independent of temperature None of these ∝ 1/CA ∝ CA Independent of temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An example of autothermal reactor operation is Ammonia synthesis Sulphur dioxide oxidation Ethylene oxidation Benzene oxidation Ammonia synthesis Sulphur dioxide oxidation Ethylene oxidation Benzene oxidation ANSWER DOWNLOAD EXAMIANS APP
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