Chemical Reaction Engineering Promoter. Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals Initiates a chemical reaction and is a catalyst by itself Atlers the position of equilibrium in a reversible reaction All of these Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals Initiates a chemical reaction and is a catalyst by itself Atlers the position of equilibrium in a reversible reaction All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is characterised by Variation in reactor volume Variation in extent of reaction and properties of the reaction mixture with time Constant residence time Very low conversion Variation in reactor volume Variation in extent of reaction and properties of the reaction mixture with time Constant residence time Very low conversion 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." 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 7R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction 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 7R/8 does not participate in reaction Inner catalyst core of radius R/2 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A back mix reactor is Same as plug flow reactor (PFR) Same as ideal stirred tank reactor Ideal at very low conversion Suitable for gas phase reactions Same as plug flow reactor (PFR) Same as ideal stirred tank reactor Ideal at very low conversion Suitable for gas phase reactions ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering As the chemical reaction proceeds, the rate of reaction Increases Remains same Decreases May increase or decrease depending on the type of reaction Increases Remains same Decreases May increase or decrease depending on the type of reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is 2 3 1 2 3 1 ANSWER DOWNLOAD EXAMIANS APP
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