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Chemical Reaction Engineering

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

N? + O? ? 2NO
2O? ? 3O?
2SO? + O? ? 2SO?
2NO? ? N?O?

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Chemical Reaction Engineering
Holding time for flow reactors is __________ the space time, for constant fluid density

None of these
Triple
Equal to
Double

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Chemical Reaction Engineering
The energy of activation of a chemical reaction

Is same as heat of reaction at constant pressure
Varies as fifth power of the temperature
Both B and C
Is the minimum energy which the molecules must have before the reaction can take place

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Chemical Reaction Engineering
In an ideal tubular-flow reactor

Mixing takes place in radial direction
There is no mixing in longitudinal direction
There is a uniform velocity across the radius
All of these

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Chemical Reaction Engineering
For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.

Diffusion through ash layer
Chemical reaction
Either A, B or C
Film diffusion

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Chemical Reaction Engineering
For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Diffusion through ash layer
Either A, B or C
Chemical reaction
Film diffusion

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