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.)

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)

Thiele modulus (L√(k/D1)

None of these

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Chemical Reaction Engineering
The half life period of a first order reaction is given by (where, K = rate constant. )

6.93 K

1.5 K

2.5 K

0.693/K

6.93 K

1.5 K

2.5 K

0.693/K

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Chemical Reaction Engineering
In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

2SO? + O? ? 2SO?

2O? ? 3O?

2NO? ? N?O?

N? + O? ? 2NO

2SO? + O? ? 2SO?

2O? ? 3O?

2NO? ? N?O?

N? + O? ? 2NO

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Chemical Reaction Engineering
'Unreacted core model' represents the reaction involving

Manufacture of carbon disulphide from elements

Roasting of sulphide ores

Combustion of coal particles

None of these

Manufacture of carbon disulphide from elements

Roasting of sulphide ores

Combustion of coal particles

None of these

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Chemical Reaction Engineering
In the converter of the contact process for the manufacture of H₂SO₄ the equilibrium conversion of SO₂ (i) with increase in temperature and (ii) with increase in the mole ratio of SO₂ to air.

(i) increases (ii) decreases

(i) decreases (ii) decreases

(i) increases (ii) increases

(i) decreases (ii) increases

(i) increases (ii) decreases

(i) decreases (ii) decreases

(i) increases (ii) increases

(i) decreases (ii) increases

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

There may be diffusion along the flow path

The conversion of the reactant varies from point to point along a flow path

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

There is no lateral mixing of fluid

The composition of reactants remains constant along a flow path

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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 The half life period of a first order reaction is given by (where, K = rate constant. )

Chemical Reaction Engineering In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

Chemical Reaction Engineering 'Unreacted core model' represents the reaction involving

Chemical Reaction Engineering In the converter of the contact process for the manufacture of H₂SO₄ the equilibrium conversion of SO₂ __________ (i) __________ with increase in temperature and __________ (ii) __________ with increase in the mole ratio of SO₂ to air.

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

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
The half life period of a first order reaction is given by (where, K = rate constant. )

Chemical Reaction Engineering
In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

Chemical Reaction Engineering
'Unreacted core model' represents the reaction involving

Chemical Reaction Engineering
In the converter of the contact process for the manufacture of H₂SO₄ the equilibrium conversion of SO₂ (i) with increase in temperature and (ii) with increase in the mole ratio of SO₂ to air.

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