__________ gas is normally employed in B.E.T.method of finding out the surface area of catalyst.

Pick out the wrong statement.

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are

In Langmuir treatment of adsorption,

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called

An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is

In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are

Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

The irreversible reaction is a special case of reversible reaction, if the

Organic catalysts differ from the inorganic catalyst in the sense that the former is

The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

Equilibrium of a chemical reaction as viewed by kinetics is a __________ state.

Helium-mercury method can be used to determine the __________ of the catalyst particle.

The rate constant of a reaction depends on the

In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1m³ /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of

An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction

The eddy diffusivity for a liquid in plug flow must be

Chemical reaction rate of a component depends upon the

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the

Exothermic reactions are best carried out in

For the liquid phase parallel reactions:
R, r_R = K₁.C_A2; E₁ =KJ/mole
S, r_s = K1.C_A ; E₂ =KJ/mole
The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

For multiple reactions, the flow pattern within the vessel affects the

The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

In a semi-batch reactor

The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

In a semi-batch reactor

For the reversible reaction A 2B, if the equilibrium constant K is 0.mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

For an ideal plug flow reactor, the value of Peclet number is

A space time of 3 hours for a flow reactor means that

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the

For the reversible reaction A 2B, if the equilibrium constant K is 0.mole/litre; starting from initially 2 moles of A and zero moles of B, how many moles will be formed at equilibrium ?

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the

For an ideal plug flow reactor, the value of Peclet number is

The rate expression for the gaseous phase reaction, CO + 2H₂ CH₃OH, is given by, . Which of the following is not possible ?

Carrier in a catalyst increases its

During manufacture of H₂SO₄, the oxidation of SO₂ to SO₃ by oxygen is an en-dothermic reaction. The yield of SO₃ will be maximised, if the

A catalyst in a chemical reaction

The exit age distribution of fluid leaving a vessel is used to know the

The rate at which a chemical substance reacts is proportional to its

With increase in temperature, the equilibrium __________ rises in case of endothermic reaction.

When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.

The role of a catalyst in a chemical reaction is to change the

Slurry reactors are characterised by the

From Arhenius law, a plot of log_e K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is

In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)

Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in

An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

The vessel dispersion number (D/μL) for plug flow is