Chemical Reaction Engineering Which of the following fixes the volume of a batch reactor for a particular conversion and production rate? Operating conditions (e.g. pressure and temperature) Rate constant Density of mixture None of these Operating conditions (e.g. pressure and temperature) Rate constant Density of mixture None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A back mix reactor is Ideal at very low conversion Same as ideal stirred tank reactor Suitable for gas phase reactions Same as plug flow reactor (PFR) Ideal at very low conversion Same as ideal stirred tank reactor Suitable for gas phase reactions Same as plug flow reactor (PFR) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because CaO is more stable than CaCO₃ CaO is not dissociated CO₂ escapes continuously Of high calcination temperature CaO is more stable than CaCO₃ CaO is not dissociated CO₂ escapes continuously Of high calcination temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume. More than Data insufficient; can't be predicted Same as Less than More than Data insufficient; can't be predicted Same as Less than ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism. Inversely proportional to Proportional to Independent of Proportional to the square of Inversely proportional to Proportional to Independent of Proportional to the square of ANSWER DOWNLOAD EXAMIANS APP
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. Either A, B or C Chemical reaction Film diffusion Diffusion through ash layer Either A, B or C Chemical reaction Film diffusion Diffusion through ash layer ANSWER DOWNLOAD EXAMIANS APP
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