Chemical Reaction Engineering A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be 0.693τ τ/0.693 0.5τ 2τ 0.693τ τ/0.693 0.5τ 2τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Increases the activation energy Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction Increases the activation energy Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a continuous flow stirred tank reactor, the composition of the exit stream Is same as that in the reactor Depends upon the flow rate of inlet stream Is different than that in the reactor None of these Is same as that in the reactor Depends upon the flow rate of inlet stream Is different than that in the reactor None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole. 1000 10000 100000 100 1000 10000 100000 100 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction Goes through a minimum along the length of the reactor Is maximum at the inlet of the reactor Is maximum at the exit of the reactor Goes through a maximum along the length of the reactor Goes through a minimum along the length of the reactor Is maximum at the inlet of the reactor Is maximum at the exit of the reactor Goes through a maximum along the length of the reactor 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 Diffusion within the pellet External mass transfer None of these Reaction Diffusion within the pellet External mass transfer None of these Reaction ANSWER DOWNLOAD EXAMIANS APP
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