Chemical Reaction Engineering What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on? Litre/mole Moles/litre.second Litre/mole.second Litre/second Litre/mole Moles/litre.second Litre/mole.second Litre/second ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst Porosity is very important None of these Internal surface area is utilised efficiently Porosity is of less importance Porosity is very important None of these Internal surface area is utilised efficiently Porosity is of less importance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A back mix reactor is Ideal at very low conversion Same as ideal stirred tank reactor Same as plug flow reactor (PFR) Suitable for gas phase reactions Ideal at very low conversion Same as ideal stirred tank reactor Same as plug flow reactor (PFR) Suitable for gas phase reactions ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Semibatch reactor is preferred, when a/an A highly exothermic reaction is to be controlled A gas is to be reacted with liquid (e.g. hydrogenation of fat) Undersirable side reaction (at high concentration of one of the reactants) is to be avoided All of these A highly exothermic reaction is to be controlled A gas is to be reacted with liquid (e.g. hydrogenation of fat) Undersirable side reaction (at high concentration of one of the reactants) is to be avoided All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The extent of a reaction is Depends on the stoichiometric co-efficient All of these Different for reactants and products Dimensionless Depends on the stoichiometric co-efficient All of these Different for reactants and products Dimensionless ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering During manufacture of H₂SO₄, the oxidation of SO₂ to SO₃ by oxygen is an en- dothermic reaction. The yield of SO₃ will be maximised, if the Temperature is increased and pressure is reduced Pressure is reduced Temperature is increased Temperature is reduced and pressure is increased Temperature is increased and pressure is reduced Pressure is reduced Temperature is increased Temperature is reduced and pressure is increased ANSWER DOWNLOAD EXAMIANS APP
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