Chemical Reaction Engineering Velocity of a chemical reaction Decreases with increase of reactant concentration None of these Decreases with increase in temperature Increases with increase of pressure of reactants for all reactions Decreases with increase of reactant concentration None of these Decreases with increase in temperature Increases with increase of pressure of reactants for all reactions ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Increased temperature reduces the activation energy Collision frequency increases Value of threshold energy decreases Fraction of molecules having threshold energy increases Increased temperature reduces the activation energy Collision frequency increases Value of threshold energy decreases Fraction of molecules having threshold energy increases 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? Zero 1 3 2 Zero 1 3 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ? 2O? ? 3O? N? + O? ? 2NO 2SO? + O? ? 2SO? 2NO? ? N?O? 2O? ? 3O? N? + O? ? 2NO 2SO? + O? ? 2SO? 2NO? ? N?O? ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in Saliva Blood Intestine Gland Saliva Blood Intestine Gland ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a reversible reaction, a catalyst increases the rate of forward reaction And decreases that of the backward reaction Only To a greater extent than that of the backward reaction And the backward reaction equally And decreases that of the backward reaction Only To a greater extent than that of the backward reaction And the backward reaction equally ANSWER DOWNLOAD EXAMIANS APP
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