Chemical Reaction Engineering Reaction rate of a first order reaction, which is half completed in 23 minutes will be 0.05 min⁻¹ 0.03 hr⁻¹ 0.03 min⁻¹ 0.03 sec⁻¹ 0.05 min⁻¹ 0.03 hr⁻¹ 0.03 min⁻¹ 0.03 sec⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In autocatalytic reactions, No catalyst is used One of the products acts as a catalyst Catalysts have very high selectivity One of the reactants acts as a catalyst No catalyst is used One of the products acts as a catalyst Catalysts have very high selectivity One of the reactants acts as a catalyst ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by External mass transfer Reaction None of these Diffusion within the pellet External mass transfer Reaction None of these Diffusion within the pellet 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 Always irreversible Highly temperature sensitive Insensitive to temperature changes Mostly irreversible Always irreversible Highly temperature sensitive Insensitive to temperature changes Mostly irreversible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The performance of a cascade of CSTR's can be improved by adding More CSTR's in series More CSTR's in parallel A P.F. reactor in parallel A P.F. reactor in series More CSTR's in series More CSTR's in parallel A P.F. reactor in parallel A P.F. reactor in series 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. 1 2 0.5 3 1 2 0.5 3 ANSWER DOWNLOAD EXAMIANS APP
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