Chemical Reaction Engineering What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only? Third First Second Zero Third First Second Zero ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the rate of a chemical reaction becomes slower at a given temperature, then the Initial concentration of the reactants remains constant Entropy changes Free energy of activation is higher Free energy of activation is lower Initial concentration of the reactants remains constant Entropy changes Free energy of activation is higher Free energy of activation is lower ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k₁/k₂).Csub>Aa-b Use batch reactor or plug flow reactor, when a > b Use high pressure and eliminate inerts, when a > b Avoid recycle, when a > b Use CSTR with a high conversion, when a > b Use batch reactor or plug flow reactor, when a > b Use high pressure and eliminate inerts, when a > b Avoid recycle, when a > b Use CSTR with a high conversion, when a > b ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering As the chemical reaction proceeds, the rate of reaction May increase or decrease depending on the type of reaction Decreases Remains same Increases May increase or decrease depending on the type of reaction Decreases Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation? Langmuir The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process None of these There is no dynamic equilibrium between successive layer Langmuir The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process None of these There is no dynamic equilibrium between successive layer ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following fixes the volume of a batch reactor for a particular conversion and production rate? Rate constant Operating conditions (e.g. pressure and temperature) None of these Density of mixture Rate constant Operating conditions (e.g. pressure and temperature) None of these Density of mixture ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS