Chemical Reaction Engineering
A trickle bed reactor is the one, which

Employs all the three phases (i.e.. .solid, liquid and gas)
Processes three reactants with same flow rate
Has altogether three streams either entering or leaving
Processes three reactants at different flow rates

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 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

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
For all positive reaction orders for a particular duty,

Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
Density variation during reaction affects design
Mixed reactor is always larger than the plug-flow reactor
Reactor size is independent of the type of flow

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
In an ideal P.F.R. at steady state conditions

There is no lateral mixing of fluid
The composition of reactants remains constant along a flow path
There may be diffusion along the flow path
The conversion of the reactant varies from point to point along a flow path

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a

Both A and B
Tubular reactor is preferred over a single CSTR for high yield
Single CSTR is the most suitable
Batch reactor is preferred over a single CSTR for high yield

ANSWER DOWNLOAD EXAMIANS APP