Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Gas film and pore surface diffusion resistances for products Surface phenomenon resistance Gas film and pore surface diffusion resistances for reactants Ash resistance Gas film and pore surface diffusion resistances for products Surface phenomenon resistance Gas film and pore surface diffusion resistances for reactants Ash resistance ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be τ/0.693 0.5τ 2τ 0.693τ τ/0.693 0.5τ 2τ 0.693τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes. 18 12 6 24 18 12 6 24 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant) Independent of temperature ∝ 1/CA ∝ CA None of these Independent of temperature ∝ 1/CA ∝ CA None of these 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 Temperature is increased and pressure is reduced Temperature is reduced and pressure is increased Pressure is reduced Temperature is increased Temperature is increased and pressure is reduced Temperature is reduced and pressure is increased Pressure is reduced ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Catalyst carriers Inhibit catalyst poisoning Have very high selectivity Increase the activity of a catalyst Provide large surface area with a small amount of active material Inhibit catalyst poisoning Have very high selectivity Increase the activity of a catalyst Provide large surface area with a small amount of active material ANSWER DOWNLOAD EXAMIANS APP
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