Chemical Reaction Engineering Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because Of high calcination temperature CaO is not dissociated CO₂ escapes continuously CaO is more stable than CaCO₃ Of high calcination temperature CaO is not dissociated CO₂ escapes continuously CaO is more stable than CaCO₃ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Fluidised bed reactor is characterised by Uniformity of temperature Comparatively smaller equipment Very small pressure drop Absence of continuous catalyst regeneration facility Uniformity of temperature Comparatively smaller equipment Very small pressure drop Absence of continuous catalyst regeneration facility ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion in a mixed reactor/accomplishing a reaction A 3R is 50% when gaseous reactant 'A' is introduced at the rate of 1 litre/second and the leaving flow rate is 2 litres/second. The holding time for this operation is __________ second. 2 3 0.5 1 2 3 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. If the volume of the reactor is suddenly reduced to l/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times. 16 8 43838 43846 16 8 43838 43846 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is Most suitable for very large production rate Suitable for gas-phase reactions on commercial scale Suitable for liquid phase reactions involving small production rate Least expensive to operate for a given rate Most suitable for very large production rate Suitable for gas-phase reactions on commercial scale Suitable for liquid phase reactions involving small production rate Least expensive to operate for a given rate ANSWER DOWNLOAD EXAMIANS APP
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. 4 3 6 8 4 3 6 8 ANSWER DOWNLOAD EXAMIANS APP
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