Chemical Reaction Engineering The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the Collision frequency increases Fraction of molecules having threshold energy increases Value of threshold energy decreases Increased temperature reduces the activation energy Collision frequency increases Fraction of molecules having threshold energy increases Value of threshold energy decreases Increased temperature reduces the activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are Of different sizes Of such size that the ratio of their volumes is < 5 None of these Equal in size Of different sizes Of such size that the ratio of their volumes is < 5 None of these Equal in size ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to (CA)n (1/2)n.CA (CA)1/n (CA)1/2n (CA)n (1/2)n.CA (CA)1/n (CA)1/2n ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Promoter is added to the catalyst to improve its Surface area None of these Porosity Sensitivity Surface area None of these Porosity Sensitivity ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In the hydrodealkylation of toluene to benzene, the following reactions occur:C₇H₈ + H₂ → C₆H₆ + CH₄2C₆H₆ ⇋ C₁₂H₁₀ + H₂Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is 0.144 0.152 0.136 0.16 0.144 0.152 0.136 0.16 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order reaction requires two equal sized CSTR. The conversion is More when they are connected in series Same whether they are connected in series or in parallel Less when they are connected in series More when they are connected in parallel More when they are connected in series Same whether they are connected in series or in parallel Less when they are connected in series More when they are connected in parallel ANSWER DOWNLOAD EXAMIANS APP
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