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

Reactor dispersion number (D/vL)

Reduced time (vt/V)

Thiele modulus (L√(k/D1)

None of these

Reactor dispersion number (D/vL)

Reduced time (vt/V)

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Chemical Reaction Engineering
In Langmuir treatment of adsorption,

All the adsorption does not take place by the same mechanism

Extent of adsorption is more than one complete monomolecular layer on the surface

Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule

Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site

All the adsorption does not take place by the same mechanism

Extent of adsorption is more than one complete monomolecular layer on the surface

Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule

Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site

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Chemical Reaction Engineering
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

≥1

1

>1

∞

≥1

1

>1

∞

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Chemical Reaction Engineering
Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.

Zero

First

Third

Second

Zero

First

Third

Second

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Chemical Reaction Engineering
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

Pressure is reduced

Temperature is increased

Temperature is reduced and pressure is increased

Temperature is increased and pressure is reduced

Pressure is reduced

Temperature is increased

Temperature is reduced and pressure is increased

Temperature is increased and pressure is reduced

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Chemical Reaction Engineering
The rate of a homogeneous reaction is a function of

Pressure and composition only

All of these

Temperature and composition only

Temperature and pressure only

Pressure and composition only

All of these

Temperature and composition only

Temperature and pressure only

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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 In Langmuir treatment of adsorption,

Chemical Reaction Engineering Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.

Chemical Reaction Engineering 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

Chemical Reaction Engineering The rate of a homogeneous reaction is a function of

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
In Langmuir treatment of adsorption,

Chemical Reaction Engineering
Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.

Chemical Reaction Engineering
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

Chemical Reaction Engineering
The rate of a homogeneous reaction is a function of