In an ideal tubular-flow reactor

Radioactive decay follows __________ order kinetics.

Rate of an autocatalytic chemical reaction is a function of

In flow reactors, the performance equations interrelate the rate of reaction to the

The value of steric factor 'P' in the equation k = PZe^E/RT usually ranges from

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

A chemical reaction, A 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is

Which of the following will favour the reverse reaction in a chemical equilibrium reaction ?

The units of frequency factor in Arhenious equation

In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.

For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

Signal normally used to study non-ideal flow by stimulus response technique is __________ input.

For a heterogeneous catalytic reaction

At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K isif Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.

A catalyst

Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure ?

Arrhenious equation represents graphically the variation between the __________ and temperature.

A first order irreversible reaction, A B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that __________ in the two reactors.

For a zero order reaction, the concentration of product increases with the

B.E.T. method can be used to determine the __________ of a porous catalyst.

A catalyst

For a gaseous phase reaction, rate of reaction is equal to K. C_A . C_B. If the volume of the reactor is suddenly reduced to l/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times.

Pick out the correct statement.

For a gaseous phase reaction, rate of reaction is equal to K. C_A . C_B. If the volume of the reactor is suddenly reduced to l/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times.

Conversion increases with increase in temperature in case of a an __________ reaction.

Which of the following is not a chemical step in a fluid solid catalytic reaction ?

The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.

A chemical reaction is of zero order, when the reaction rate is (where, C_A = concentration of reactant)

'Unreacted core model' represents the reaction involving

Differential method for analysing the kinetic data is used

When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield.

__________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction.

For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by

__________ catalytic reaction is involved in the thermal cracking of gas oil.

Variables affecting the rate of homogeneous reactions are

Pick out the wrong statement.

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

The half life period of a first order reaction is

'If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

An autothermal reactor is

'If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

Fluid flow in a real packed bed can be approximated as __________ model.

A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

Effectiveness factor of a catalyst pellet is a measure of the __________ resistance.

A catalyst inhibitor

For series reaction, the relative yield

For a series of reactions having k₁ << k₂, the reaction system can be approximated as

The rate expression for a heterogenous catalytic reaction is given by, - r_A = K.K_A P_A(1 + K_A.P_A + K_R.P_R), where K is surface reaction rate constant and K_A and K_R are absorption equilibrium constants of A and R respectively. If K_R P_R >> (1 + K_A P_A), the apparent activation energy E_A is equal to (given E is the activation energy for the reaction and ΔH_R and ΔH_A are the activation energies of adsorption of R and A)