Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Increases the activation energy None of these Decreases the molecular collision diameter Decreases the energy barrier for reaction Increases the activation energy None of these Decreases the molecular collision diameter Decreases the energy barrier for reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Always irreversible Insensitive to temperature changes Highly temperature sensitive Mostly irreversible Always irreversible Insensitive to temperature changes Highly temperature sensitive Mostly irreversible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The performance of a cascade of CSTR's can be improved by adding More CSTR's in series A P.F. reactor in series A P.F. reactor in parallel More CSTR's in parallel More CSTR's in series A P.F. reactor in series A P.F. reactor in parallel More CSTR's in parallel ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An example of autothermal reactor operation is Ammonia synthesis Benzene oxidation Sulphur dioxide oxidation Ethylene oxidation Ammonia synthesis Benzene oxidation Sulphur dioxide oxidation Ethylene oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be 0.693τ τ/0.693 2τ 0.5τ 0.693τ τ/0.693 2τ 0.5τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The gas phase reaction 2A ⇋ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is 43833 43898 43864 43959 43833 43898 43864 43959 ANSWER DOWNLOAD EXAMIANS APP
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