A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

Chemical Reaction Engineering
A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

3

1

32

43833

3

1

32

43833

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Chemical Reaction Engineering
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

Changes unpredictably

Remains unaltered

Decreases

Increases

Changes unpredictably

Remains unaltered

Decreases

Increases

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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

Reduced time (vt/V)

Thiele modulus (L√(k/D1)

Reactor dispersion number (D/vL)

None of these

Reduced time (vt/V)

Thiele modulus (L√(k/D1)

Reactor dispersion number (D/vL)

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Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

All of these

A highly exothermic reaction is to be controlled

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

All of these

A highly exothermic reaction is to be controlled

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

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

(i) endothermic (ii) exothermic

(i) exothermic (ii) exothermic

(i) endothermic (ii) enodthermic

(i) exothermic (ii) endothermic

(i) endothermic (ii) exothermic

(i) exothermic (ii) exothermic

(i) endothermic (ii) enodthermic

(i) exothermic (ii) endothermic

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Chemical Reaction Engineering
Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.

6

3

4

8

6

3

4

8

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Chemical Reaction Engineering

Chemical Reaction Engineering A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

Chemical Reaction Engineering If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

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 Semibatch reactor is preferred, when a/an

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

Chemical Reaction Engineering Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.

Chemical Reaction Engineering
A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

Chemical Reaction Engineering
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

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
Semibatch reactor is preferred, when a/an

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

Chemical Reaction Engineering
Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.