Chemical Reaction Engineering In a zero order reaction, reactants concentration does not change with time and the Time for half change is half the time taken for completion of the reaction Time for half change is independent of the initial concentration Reaction rate is trebled when the initial concentration is trebled Time for completion of the reaction is independent of the initial concentration Time for half change is half the time taken for completion of the reaction Time for half change is independent of the initial concentration Reaction rate is trebled when the initial concentration is trebled Time for completion of the reaction is independent of the initial concentration ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In the reversible reaction of the type, A + B ⇋ AB, in general Both forward and backward reactions will be exothermic The combination reaction will be exothermic, while the dissociation reaction will be endothermic The combination reaction will be endothermic, while the dissociation reaction will be exothermic Neither of the reactions will be en-dothermic Both forward and backward reactions will be exothermic The combination reaction will be exothermic, while the dissociation reaction will be endothermic The combination reaction will be endothermic, while the dissociation reaction will be exothermic Neither of the reactions will be en-dothermic ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation? The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process Langmuir There is no dynamic equilibrium between successive layer None of these The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process Langmuir There is no dynamic equilibrium between successive layer None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is Less Same More Either A or B, depends on other factors Less Same More Either A or B, depends on other factors ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to ED/2 The intrinsic activation energy E (E + ED) where ED is activation due to diffusion (E + ED)/2 ED/2 The intrinsic activation energy E (E + ED) where ED is activation due to diffusion (E + ED)/2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the reversible reaction A ⇋ 2B, if the equilibrium constant K is 0.05 mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium? 0.637 0.338 0.152 0.253 0.637 0.338 0.152 0.253 ANSWER DOWNLOAD EXAMIANS APP
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