Chemical Reaction Engineering A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction. Equal to or more than Equal to Less than More than Equal to or more than Equal to Less than More than 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? 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 Langmuir ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a chemical reaction, __________ are conserved. Atoms Both B & C Masses Ions Atoms Both B & C Masses Ions ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction? 2 3 1 Zero 2 3 1 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The increase in the rate of reaction with temperature is due to None of these Decrease in activation energy Increase in the number of effective collisions Increase in the average kinetic energy of the reacting molecules None of these Decrease in activation energy Increase in the number of effective collisions Increase in the average kinetic energy of the reacting molecules ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle) Changes unpredictably Increases Decreases Remains unaltered Changes unpredictably Increases Decreases Remains unaltered ANSWER DOWNLOAD EXAMIANS APP
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