Chemical Reaction Engineering An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature. May be greater or less than Is always greater than Is always equal to Is always less than May be greater or less than Is always greater than Is always equal to Is always less than ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because CO₂ escapes continuously CaO is more stable than CaCO₃ Of high calcination temperature CaO is not dissociated CO₂ escapes continuously CaO is more stable than CaCO₃ Of high calcination temperature CaO is not dissociated ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The role of a catalyst in a chemical reaction is to change the Heat of reaction Equilibrium constant Final products Activation energy Heat of reaction Equilibrium constant Final products Activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism. Proportional to Proportional to the square of Inversely proportional to Independent of Proportional to Proportional to the square of Inversely proportional to Independent of ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance. Either A, B or C Chemical reaction Film diffusion Diffusion through ash layer Either A, B or C Chemical reaction Film diffusion Diffusion through ash layer ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In an ideal mixed reactor (at steady state), the Composition throughout the reactor remains same Space time is equivalent to holding time for constant density systems All of these Exit stream has the same composition as the fluid within the reactor Composition throughout the reactor remains same Space time is equivalent to holding time for constant density systems All of these Exit stream has the same composition as the fluid within the reactor ANSWER DOWNLOAD EXAMIANS APP
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