The value of steric factor 'P' in the equation k = PZeE/RT usually ranges from L.l.to 10² L.0 to 10⁻⁸ 0.1 to 0.9 None of these TRUE ANSWER : ? YOUR ANSWER : ?
What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to CAn and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ? 1/2 3 1/3 1/9 TRUE ANSWER : ? YOUR ANSWER : ?
Exothermic reactions are best carried out in CSTR followed by a plug flow reactor CSTR in series A plug flow reactor followed by CSTR A CSTR TRUE ANSWER : ? YOUR ANSWER : ?
The order of a chemical reaction is None of these An experimentally determined quantity Always equal to the total stoichiometric number of reactants Never fractional TRUE ANSWER : ? YOUR ANSWER : ?
A rise in temperature Does not affect photo-chemical reaction rates Does not affect a catalysed reaction All of these Normally tends to increase the reaction rate TRUE ANSWER : ? YOUR ANSWER : ?
When the reaction is dominated by in-traparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ND = n/2 ND = (n + 1)/2 None of these ND = n + 1 TRUE ANSWER : ? YOUR ANSWER : ?
Integral method for analysing the kinetic data is used When the data are scattered Both A and B For testing specific mechanisms with simple rate expressions None of these TRUE ANSWER : ? YOUR ANSWER : ?
Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ⇋ CaO + CO₂), the pressure of CO₂ increases, if None of these The temperature is increased An inert gas is pumped keeping the temperature constant A catalyst is added TRUE ANSWER : ? YOUR ANSWER : ?
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature? Chemical reaction Film diffusion Pore diffusion Ash layer diffusion TRUE ANSWER : ? YOUR ANSWER : ?
In an ideal tubular-flow reactor All of these There is no mixing in longitudinal direction There is a uniform velocity across the radius Mixing takes place in radial direction TRUE ANSWER : ? YOUR ANSWER : ?