Chemical Reaction Engineering A catalyst in a chemical reaction Alters the reaction mechanism All of these Decreases the activation energy Increases the frequency of collisions of reacting species Alters the reaction mechanism All of these Decreases the activation energy Increases the frequency of collisions of reacting species ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering When a catalyst increases the rate of forward reaction, the value of rate constant Becomes infinite Increases Decreases Remain same Becomes infinite Increases Decreases Remain same ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Photochemical reaction rate does not depend significantly on temperature, because It is an exothermic reaction None of these The energy of reacting molecules exceeds the activation energy by absorption of light It is a reversible reaction It is an exothermic reaction None of these The energy of reacting molecules exceeds the activation energy by absorption of light It is a reversible reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good. τ = θ , when the fluid density changes in the reactor τ = θ , for a non-isothermal reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant τ and θ are always equal τ = θ , when the fluid density changes in the reactor τ = θ , for a non-isothermal reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant τ and θ are always equal ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance. Diffusion through ash layer Film diffusion Chemical reaction Either A, B or C Diffusion through ash layer Film diffusion Chemical reaction Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The performance equations for constant density systems are identical for P.F.R. and batch reactor P.F.R, batch reactor and backmix reactor P.F.R. and backmix reactor Batch reactor and backmix reactor P.F.R. and batch reactor P.F.R, batch reactor and backmix reactor P.F.R. and backmix reactor Batch reactor and backmix reactor ANSWER DOWNLOAD EXAMIANS APP
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