Chemical Reaction Engineering If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible. ∞ > 0.5 0 < 0.5 ∞ > 0.5 0 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Carrier in a catalyst increases its Surface area Performance Activity None of these Surface area Performance Activity None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a Batch reactor is preferred over a single CSTR for high yield Both A and B Single CSTR is the most suitable Tubular reactor is preferred over a single CSTR for high yield Batch reactor is preferred over a single CSTR for high yield Both A and B Single CSTR is the most suitable Tubular reactor is preferred over a single CSTR for high yield ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Space time equals the mean residence time When the density of the reaction mixture is constant For narrow diameter tubular reactor For large diameter tubular reactor For CSTR When the density of the reaction mixture is constant For narrow diameter tubular reactor For large diameter tubular reactor For CSTR 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 None of these Langmuir 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 There is no dynamic equilibrium between successive layer None of these Langmuir 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Helium-mercury method is used for the measurement of the __________ of the catalyst. Porosity Pore volume Surface area Both B & C Porosity Pore volume Surface area Both B & C ANSWER DOWNLOAD EXAMIANS APP
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