Chemical Reaction Engineering A batch reactor suffers from following disadvantage. High labour and handling cost High shutdown time requirement for emptying, cleaning and refilling Poor product quality control All of these High labour and handling cost High shutdown time requirement for emptying, cleaning and refilling Poor product quality control All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the dispersion number for a CSTR? 1 ∞ 0 < 1 1 ∞ 0 < 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to (1/2)n.CA (CA)1/n (CA)1/2n (CA)n (1/2)n.CA (CA)1/n (CA)1/2n (CA)n ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a semi-batch reactor Residence time is constant Velocity of reaction can be controlled Both the reactants flow counter-currently Maximum conversion can be controlled Residence time is constant Velocity of reaction can be controlled Both the reactants flow counter-currently Maximum conversion can be controlled ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Collision frequency increases Value of threshold energy decreases Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Collision frequency increases Value of threshold energy decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Mostly irreversible Highly temperature sensitive Insensitive to temperature changes Always irreversible Mostly irreversible Highly temperature sensitive Insensitive to temperature changes Always irreversible ANSWER DOWNLOAD EXAMIANS APP
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