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.)

None of these

Thiele modulus (L√(k/D1)

Reduced time (vt/V)

Reactor dispersion number (D/vL)

None of these

Thiele modulus (L√(k/D1)

Reduced time (vt/V)

Reactor dispersion number (D/vL)

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Chemical Reaction Engineering
Promoter is added to the catalyst to improve its

Porosity

Surface area

Sensitivity

None of these

Porosity

Surface area

Sensitivity

None of these

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Chemical Reaction Engineering
For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR.

0.6

0.3

0.9

0.15

0.6

0.3

0.9

0.15

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Chemical Reaction Engineering
Rate of a chemical reaction is not affected by the

Reactant's concentration

Temperature

Number of molecules of reactants taking part in the reaction

Catalyst

Reactant's concentration

Temperature

Number of molecules of reactants taking part in the reaction

Catalyst

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Chemical Reaction Engineering
In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

Reversible exothermic

Reversible endothermic

Irreversible exothermic

Irreversible endothermic

Reversible exothermic

Reversible endothermic

Irreversible exothermic

Irreversible endothermic

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Chemical Reaction Engineering
Mean residence time is equal to the space time, when

The feed rate is measured at temperature and pressure in the reactor

There is no change in number of moles in gaseous reaction

All of these

The temperature, pressure and the density of reaction mixture remains constant throughout the reactor

The feed rate is measured at temperature and pressure in the reactor

There is no change in number of moles in gaseous reaction

All of these

The temperature, pressure and the density of reaction mixture remains constant throughout the reactor

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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 Promoter is added to the catalyst to improve its

Chemical Reaction Engineering Rate of a chemical reaction is not affected by the

Chemical Reaction Engineering In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

Chemical Reaction Engineering Mean residence time is equal to the space time, when

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
Promoter is added to the catalyst to improve its

Chemical Reaction Engineering
Rate of a chemical reaction is not affected by the

Chemical Reaction Engineering
In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

Chemical Reaction Engineering
Mean residence time is equal to the space time, when