Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering
Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Thiele modulus (L√(k/D1)

None of these

Reduced time (vt/V)

Reactor dispersion number (D/vL)

Thiele modulus (L√(k/D1)

None of these

Reduced time (vt/V)

Reactor dispersion number (D/vL)

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Chemical Reaction Engineering
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.

T ∝ 1/an

T ∝ an

T ∝ 1/an - 1

T ∝ 1/an + 1

T ∝ 1/an

T ∝ an

T ∝ 1/an - 1

T ∝ 1/an + 1

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Chemical Reaction Engineering
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

Parallel

Elementary

None of these

Consecutive

Parallel

Elementary

None of these

Consecutive

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Chemical Reaction Engineering
In the fluid catalytic cracker (FCC), the cracking reaction is (i) and the regeneration is __ (ii)

(i) exothermic (ii) exothermic

(i) exothermic (ii) endothermic

(i) endothermic (ii) enodthermic

(i) endothermic (ii) exothermic

(i) exothermic (ii) exothermic

(i) exothermic (ii) endothermic

(i) endothermic (ii) enodthermic

(i) endothermic (ii) exothermic

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Chemical Reaction Engineering
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Is always equal to

Is always greater than

Is always less than

May be greater or less than

Is always equal to

Is always greater than

Is always less than

May be greater or less than

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Chemical Reaction Engineering
The reason why a catalyst increases the rate of reaction is that, it

Decreases the energy barrier for reaction

None of these

Increases the activation energy

Decreases the molecular collision diameter

Decreases the energy barrier for reaction

None of these

Increases the activation energy

Decreases the molecular collision diameter

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Chemical Reaction Engineering

Chemical Reaction Engineering Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.

Chemical Reaction Engineering Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

Chemical Reaction Engineering In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii)

Chemical Reaction Engineering An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it

Chemical Reaction Engineering
Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.)

Chemical Reaction Engineering
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.

Chemical Reaction Engineering
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

Chemical Reaction Engineering
In the fluid catalytic cracker (FCC), the cracking reaction is (i) and the regeneration is __ (ii)

Chemical Reaction Engineering
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Chemical Reaction Engineering
The reason why a catalyst increases the rate of reaction is that, it