Chemical Reaction Engineering The energy of activation of a chemical reaction Is same as heat of reaction at constant pressure Both B and C Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Is same as heat of reaction at constant pressure Both B and C Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature 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? 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 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR. 0.6 0.9 0.15 0.3 0.6 0.9 0.15 0.3 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Space time in flow reactor is Both A and B Usually equal to the residence time A measure of its capacity The reciprocal of the space velocity Both A and B Usually equal to the residence time A measure of its capacity The reciprocal of the space velocity ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For all positive reaction orders for a particular duty, Density variation during reaction affects design Mixed reactor is always larger than the plug-flow reactor Reactor size is independent of the type of flow Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order Density variation during reaction affects design Mixed reactor is always larger than the plug-flow reactor Reactor size is independent of the type of flow Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order 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. Same as Data insufficient; can't be predicted Less than More than Same as Data insufficient; can't be predicted Less than More than ANSWER DOWNLOAD EXAMIANS APP
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