Chemical Reaction Engineering A batch reactor suffers from following disadvantage. High shutdown time requirement for emptying, cleaning and refilling High labour and handling cost Poor product quality control All of these High shutdown time requirement for emptying, cleaning and refilling High labour and handling cost Poor product quality control All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering From collison theory, the reaction rate constant is proportional to Exp(- E/2RT) Exp(- E/RT) Tm.exp(- E/RT) √T Exp(- E/2RT) Exp(- E/RT) Tm.exp(- E/RT) √T ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at Low temperature in a CSTR Low temperature in a PFR High temperature in a CSTR High temperature in a PFR Low temperature in a CSTR Low temperature in a PFR High temperature in a CSTR High temperature in a PFR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering "A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction." Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 Inner catalyst core of radius R/2 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius 7R/8 does not participate in reaction Ffectiveness factor for a zero order reaction can not be 7/8 as it must always be 1 Inner catalyst core of radius R/2 does not participate in reaction Inner catalyst core of radius R/8 does not participate in reaction Inner catalyst core of radius 7R/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is Most suitable for very large production rate Suitable for liquid phase reactions involving small production rate Least expensive to operate for a given rate Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Suitable for liquid phase reactions involving small production rate Least expensive to operate for a given rate Suitable for gas-phase reactions on commercial scale ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? Freundlich adsorption isotherm Adsorption isobar None of these Langmuir adsorption isotherm Freundlich adsorption isotherm Adsorption isobar None of these Langmuir adsorption isotherm ANSWER DOWNLOAD EXAMIANS APP
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