Chemical Reaction Engineering Most important characteristics of gas-liquid reactors are the Liquid hold-up Both A and B Specific inter-facial area None of these Liquid hold-up Both A and B Specific inter-facial area None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate of a chemical reaction is independent of the concentration of the reactants for a __________ reaction. None of these Third order Zero order Consecutive None of these Third order Zero order Consecutive 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 Less than Same as More than Data insufficient; can't be predicted Less than Same as More than 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? There is no dynamic equilibrium between successive layer 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 None of these Langmuir There is no dynamic equilibrium between successive layer 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 None of these Langmuir ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature. Is always equal to Is always less than May be greater or less than Is always greater than Is always equal to Is always less than May be greater or less than Is always greater than ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m³ ; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min⁻¹ ; (ΔH) = - 40kJ/mole; ρ = 1000kg/m³ CP = 4 J/gm.°C ; q = 10⁻³ m³/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is 1kW 4kW 2/3 kW 5/3 kW 1kW 4kW 2/3 kW 5/3 kW ANSWER DOWNLOAD EXAMIANS APP
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