Chemical Reaction Engineering The reactions of high molecularity are rare, because Many body collisions are not favoured energetically Of low probability of many body collisions Of requirement of very large concentration for such reactions Of very large activation energy of many bodies Many body collisions are not favoured energetically Of low probability of many body collisions Of requirement of very large concentration for such reactions Of very large activation energy of many bodies ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume. Data insufficient; can't be predicted More than Less than Same as Data insufficient; can't be predicted More than Less than Same as ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering From collison theory, the reaction rate constant is proportional to √T Tm.exp(- E/RT) Exp(- E/RT) Exp(- E/2RT) √T Tm.exp(- E/RT) Exp(- E/RT) Exp(- E/2RT) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to (E + ED)/2 (E + ED) where ED is activation due to diffusion ED/2 The intrinsic activation energy E (E + ED)/2 (E + ED) where ED is activation due to diffusion ED/2 The intrinsic activation energy E ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Most important characteristics of gas-liquid reactors are the None of these Liquid hold-up Specific inter-facial area Both A and B None of these Liquid hold-up Specific inter-facial area Both A and B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of Chanelling Dead zone Ideal plug flow Bypass Chanelling Dead zone Ideal plug flow Bypass ANSWER DOWNLOAD EXAMIANS APP
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