Chemical Reaction Engineering A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to Lose a proton Lose an electron None of these Gain a proton Lose a proton Lose an electron None of these Gain a proton ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Space time equals the mean residence time For narrow diameter tubular reactor When the density of the reaction mixture is constant For CSTR For large diameter tubular reactor For narrow diameter tubular reactor When the density of the reaction mixture is constant For CSTR For large diameter tubular 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 External mass transfer None of these Reaction Diffusion within the pellet External mass transfer None of these Reaction Diffusion within the pellet ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor. Fluidised Fixed bed reactor followed by a fluidised Fixed Fluidised bed reactor followed by a fixed Fluidised Fixed bed reactor followed by a fluidised Fixed Fluidised bed reactor followed by a fixed ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at Low temperature in a CSTR Low temperature in a PFR High temperature in a PFR High temperature in a CSTR Low temperature in a CSTR Low temperature in a PFR High temperature in a PFR High temperature in a CSTR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A batch reactor is Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate Suitable for gas-phase reactions on commercial scale Most suitable for very large production rate Least expensive to operate for a given rate Suitable for liquid phase reactions involving small production rate ANSWER DOWNLOAD EXAMIANS APP
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