Chemical Reaction Engineering The energy of activation of a chemical reaction Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Both B and C Is same as heat of reaction at constant pressure Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Both B and C Is same as heat of reaction at constant pressure 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/2 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/8 does not participate in reaction Inner catalyst core of radius R/2 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/8 does not participate in reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Molecularity of a reaction Both B and C Is always equal to the overall order of reaction May not be equal to the order of reaction Can Both B and C Is always equal to the overall order of reaction May not be equal to the order of reaction Can ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In an ideal tubular-flow reactor All of these Mixing takes place in radial direction There is no mixing in longitudinal direction There is a uniform velocity across the radius All of these Mixing takes place in radial direction There is no mixing in longitudinal direction There is a uniform velocity across the radius ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The time needed to achieve the same fractional conversion for particles of different sizes (d) when chemical reaction controls, is proportional to D1.5 D2 D √d D1.5 D2 D √d ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is Plug flow reactor Backmix reactor Series of CSTR PFR in series Plug flow reactor Backmix reactor Series of CSTR PFR in series ANSWER DOWNLOAD EXAMIANS APP
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