__________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction. Ash diffusion Gas film diffusion Chemical reaction None of these TRUE ANSWER : ? YOUR ANSWER : ?
Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot? Ln CA0 Vs t1/2 Ln CA0 Vs ln t1/2 CA0 Vs ln t1/2 CA0 Vs t1/2 TRUE ANSWER : ? YOUR ANSWER : ?
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be Data insufficient; can't be predicted Higher in CSTR Higher in P.F. reactor Same in both the reactors TRUE ANSWER : ? YOUR ANSWER : ?
There is no correspondence between stoichiometry and the rate equation in case of a/an __________ reaction. Elementary Autocatalytic Multiple Non-elementary TRUE ANSWER : ? YOUR ANSWER : ?
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second) 1 L√(K/D1) ∞ 1/(L√(K/D1)) TRUE ANSWER : ? YOUR ANSWER : ?
The energy of activation of a chemical reaction Is the minimum energy which the molecules must have before the reaction can take place Both B and C Is same as heat of reaction at constant pressure Varies as fifth power of the temperature TRUE ANSWER : ? YOUR ANSWER : ?
The performance of a cascade of CSTR's can be improved by adding More CSTR's in series More CSTR's in parallel A P.F. reactor in parallel A P.F. reactor in series TRUE ANSWER : ? YOUR ANSWER : ?
Equilibrium of a chemical reaction as viewed by kinetics is a __________ state. None of these Static steady Dynamic steady Dynamic unsteady TRUE ANSWER : ? YOUR ANSWER : ?
Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion. Decrease Either A or B, depends on the type of reaction No change Increase TRUE ANSWER : ? YOUR ANSWER : ?
A catalyst promoter Acts as a catalyst support Improves the activity of a catalyst All of these Itself has very high activity TRUE ANSWER : ? YOUR ANSWER : ?