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.

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

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Chemical Reaction Engineering
Batch process is preferred over continuous process, when the

Sales demand of product is not steady
Same equipment can not be used for several processes of the same nature
Product yields and quality can not be achieved in continuous process, because of long residence time
All of these

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Chemical Reaction Engineering
Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is

1
3
0
2

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