Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by 1/keff = 1/k + 1/kg keff = (kkg)1/2 keff = k + kg keff = (k+ kg)/2 1/keff = 1/k + 1/kg keff = (kkg)1/2 keff = k + kg keff = (k+ kg)/2 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 2τ 0.693τ 0.5τ τ/0.693 2τ 0.693τ 0.5τ τ/0.693 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering __________ explains the mechanism of catalysis. Activated complex theory Collision theory None of these Thermodynamics Activated complex theory Collision theory None of these Thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Autocatalytic reactions are best carried out in a Plug flow reactor Recycle reactor CSTR in series CSTR Plug flow reactor Recycle reactor CSTR in series CSTR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Cold shot cooling is only practical when the feed temperature is __________ than the reaction temperature. Lower Much lower Higher Much higher Lower Much lower Higher Much higher ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate of a chemical reaction is not influenced by the Catalyst Number of molecules of reactants taking part in a reaction Temperature Reactants concentration Catalyst Number of molecules of reactants taking part in a reaction Temperature Reactants concentration ANSWER DOWNLOAD EXAMIANS APP
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