Chemical Reaction Engineering If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship. T ∝ an T ∝ 1/an T ∝ 1/an + 1 T ∝ 1/an - 1 T ∝ an T ∝ 1/an T ∝ 1/an + 1 T ∝ 1/an - 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible. ∞ > 0.5 0 < 0.5 ∞ > 0.5 0 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A stirred tank reactor compared to tubular-flow reactor provides All of these More uniform operating conditions Higher overall selectivity for a first order consecutive reaction Permits operation at the optimum temperature for a long reaction time All of these More uniform operating conditions Higher overall selectivity for a first order consecutive reaction Permits operation at the optimum temperature for a long reaction time 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 0.693τ 2τ τ/0.693 0.5τ 0.693τ 2τ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions. Autocatalytic Exothermic Endothermic Autothermal Autocatalytic Exothermic Endothermic Autothermal ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇋ 2NH₃. Decreases Unpredictable from the data Increases Remains unchanged Decreases Unpredictable from the data Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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