A trickle bed reactor is the one, which
A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction.
Holding time for flow reactors is __________ the space time, for constant fluid density
Pick out the wrong statement.
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.The effectiveness factor will increase if the
For a first order chemical reaction, the rate constant
For a fluidised bed reactor, the most suitable/relevant model is a __________ model.
Chemical kinetics can predict the __________ of a chemical reaction.
If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst
The importance of diffusion in a catalyst are increased by
Which of the following factors control the deactivation of a porous catalyst pellet ?
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is
In a reversible reaction, a catalyst increases the rate of forward reaction
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?
Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction.
Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes.
Cold shot cooling is only practical when the feed temperature is __________ than the reaction temperature.
In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it frommoles/litre to 5 moles/litre in the same volume.
The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is
A back mix reactor is
The rate constant of a reaction is a function of the
Transition state theory gives the rate constant as
In a continuous flow stirred tank reactor, the composition of the exit stream
Maximum equilibrium conversion for endothermic reaction is obtained at the __________ temperature.
The excess energy of the reactants required to dissociate into products is known as the __________ energy.
The preferred reacting system for oxidation of o-xylene to phthalic anhydride is
Photo-chemical reactions occur in presence of
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?
Mean residence time is equal to the space time, when
For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single
A batch reactor suffers from following disadvantage.
Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion.
The energy balance equation over a tubular reactor under transient conditions is
When an exothermic reversible reaction is conducted adiabatically, the rate of reaction
For a first order chemical reaction in a porous catalyst, the Thiele modulus isThe effectiveness factor is approximately equal to
Inversion of cane sugar is an example of
In a/an __________ vessel, the fluid enters and leaves following plug flow.
Shift conversion reaction
'n' number of plug flow reactors (P.F.R) in series with a total volume 'V' gives the same conversion as one P.F.R. of volume
Knudsen diffusion is directly proportional to
The equilibrium constant K of a chemical reaction depends on
If 'n' is the order of reaction, then unit of rate constant is
What is the value of 'n' if the reaction rate of the chemical reaction A B, is proportional to CAn and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ?
Time required fordecomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required fordecomposition will be about __________ minutes.
For a __________ order reaction, the units of rate constant and rate of reaction are the same.
Please disable the adBlock and continue. Thank you.