Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Increased temperature reduces the activation energy Value of threshold energy decreases Fraction of molecules having threshold energy increases Collision frequency increases Increased temperature reduces the activation energy Value of threshold energy decreases Fraction of molecules having threshold energy increases Collision frequency increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The equilibrium constant K of a chemical reaction depends on Temperature and pressure Ratio of reactants Temperature only Pressure only Temperature and pressure Ratio of reactants Temperature only Pressure only 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 0.5 3 2 1 0.5 3 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A back mix reactor is Ideal at very low conversion Same as plug flow reactor (PFR) Same as ideal stirred tank reactor Suitable for gas phase reactions Ideal at very low conversion Same as plug flow reactor (PFR) Same as ideal stirred tank reactor Suitable for gas phase reactions ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is used for calcination of limestone and dolomite in industrial practice? Fixed bed reactor Fluidised bed reactor Moving bed reactor None of these Fixed bed reactor Fluidised bed reactor Moving bed reactor None of these 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 Reaction External mass transfer None of these Diffusion within the pellet Reaction External mass transfer None of these Diffusion within the pellet ANSWER DOWNLOAD EXAMIANS APP
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