Chemical Reaction Engineering A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) ∝ CA None of these Independent of temperature ∝ 1/CA ∝ CA None of these Independent of temperature ∝ 1/CA 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the dispersion number for a plug flow reactor? -1 ? 1 -1 ? 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Half life period of a first order irreversible reaction A → B is Ln 0.5/k K/2 Ln k/2 Ln 2/k Ln 0.5/k K/2 Ln k/2 Ln 2/k ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is 8764°K 8621°K 9210°K 8987°K 8764°K 8621°K 9210°K 8987°K ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For an autocatalytic reactor, the suitable reactor set up is CSTR followed by P.F. reactor CSTR in series P.F. reactors in series P.F. reactor followed by CSTR CSTR followed by P.F. reactor CSTR in series P.F. reactors in series P.F. reactor followed by CSTR ANSWER DOWNLOAD EXAMIANS APP
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