For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. Physical Both A and B Neither A nor B Chemical TRUE ANSWER : ? YOUR ANSWER : ?
The single parameter model proposed for describing non-ideal flow is the __________ model. Both A & B Tank in series Dispersion Neither A nor B TRUE ANSWER : ? YOUR ANSWER : ?
For an ideal plug flow reactor, the value of Peclet number is 0 10 ∞ 1 TRUE ANSWER : ? YOUR ANSWER : ?
From Arhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is °K K cal. °K K cal K cal/°K TRUE ANSWER : ? YOUR ANSWER : ?
In an exothermic chemical reaction, the reactants compared to the products have Less energy More energy Higher temperature Same energy TRUE ANSWER : ? YOUR ANSWER : ?
In a CSTR __________ varies with time. Concentration Neither A nor B Both A & B Reaction rate TRUE ANSWER : ? YOUR ANSWER : ?
If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to (E + ED) where ED is activation due to diffusion The intrinsic activation energy E ED/2 (E + ED)/2 TRUE ANSWER : ? YOUR ANSWER : ?
What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on? Litre/mole.second Litre/mole Litre/second Moles/litre.second TRUE ANSWER : ? YOUR ANSWER : ?
A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by Reaction Diffusion within the pellet External mass transfer None of these TRUE ANSWER : ? YOUR ANSWER : ?
A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be 10°C 20°C 100°C 5°C TRUE ANSWER : ? YOUR ANSWER : ?