Chemical Reaction Engineering In an ideal tubular-flow reactor There is a uniform velocity across the radius There is no mixing in longitudinal direction All of these Mixing takes place in radial direction There is a uniform velocity across the radius There is no mixing in longitudinal direction All of these Mixing takes place in radial direction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Threshold energy in a reaction is equal to the Activation energy Sum of A & B Normal energy of reactants Neither A nor B Activation energy Sum of A & B Normal energy of reactants Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a zero order reaction, reactants concentration does not change with time and the Reaction rate is trebled when the initial concentration is trebled Time for completion of the reaction is independent of the initial concentration Time for half change is independent of the initial concentration Time for half change is half the time taken for completion of the reaction Reaction rate is trebled when the initial concentration is trebled Time for completion of the reaction is independent of the initial concentration Time for half change is independent of the initial concentration Time for half change is half the time taken for completion of the reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA E E + ΔHA - ΔHR ΔHA + ΔHR E + ΔHA E ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is an autocatalytic reaction? Enzyme fermentation reaction Photochemical reactions Ammonia synthesis reaction Microbial fermentation reaction Enzyme fermentation reaction Photochemical reactions Ammonia synthesis reaction Microbial fermentation reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction Goes through a maximum along the length of the reactor Is maximum at the exit of the reactor Goes through a minimum along the length of the reactor Is maximum at the inlet of the reactor Goes through a maximum along the length of the reactor Is maximum at the exit of the reactor Goes through a minimum along the length of the reactor Is maximum at the inlet of the reactor ANSWER DOWNLOAD EXAMIANS APP
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