Chemical Reaction Engineering The half life period of a first order reaction is Half the specific rate constant Proportional to the initial concentration of reactants Dependent on initial concentration of the reactants Always the same irrespective of the reaction Half the specific rate constant Proportional to the initial concentration of reactants Dependent on initial concentration of the reactants Always the same irrespective of the reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is 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 Most suitable for very large production rate Suitable for gas-phase reactions on commercial scale ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is used for calcination of limestone and dolomite in industrial practice? Fluidised bed reactor Fixed bed reactor Moving bed reactor None of these Fluidised bed reactor Fixed bed reactor Moving bed reactor None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be 60 75 90 100 60 75 90 100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂. Decrease Increase No change Unpredictable from the data Decrease Increase No change Unpredictable from the data ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as k ∝ T k ∝ exp(-E/RT) k ∝ √T k ∝ T1.5 k ∝ T k ∝ exp(-E/RT) k ∝ √T k ∝ T1.5 ANSWER DOWNLOAD EXAMIANS APP
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