Chemical Reaction Engineering Sometimes, batch process is preferred over continuous process, when the product Sales demand is fluctuating Both A & B Quality & yield can not be achieved in continuous processes, because of long residence time Neither A nor B Sales demand is fluctuating Both A & B Quality & yield can not be achieved in continuous processes, because of long residence time Neither A nor B 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. Film diffusion Diffusion through ash layer Chemical reaction Either A, B or C Film diffusion Diffusion through ash layer Chemical reaction Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are 1 & 1 2 && 2 2 & 1 11 & 2 1 & 1 2 && 2 2 & 1 11 & 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by 1/keff = 1/k + 1/kg keff = (k+ kg)/2 keff = (kkg)1/2 keff = k + kg 1/keff = 1/k + 1/kg keff = (k+ kg)/2 keff = (kkg)1/2 keff = k + kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Space time in flow reactor is Both A and B A measure of its capacity Usually equal to the residence time The reciprocal of the space velocity Both A and B A measure of its capacity Usually equal to the residence time The reciprocal of the space velocity ANSWER DOWNLOAD EXAMIANS APP
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
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