Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Surface phenomenon resistance Gas film and pore surface diffusion resistances for products Gas film and pore surface diffusion resistances for reactants Ash resistance TRUE ANSWER : ? YOUR ANSWER : ?
The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction? 2 0.5 1 TRUE ANSWER : ? YOUR ANSWER : ?
The catalyst in a first order chemical reaction changes the Equilibrium constant Heat of formation of the product Activation energy Heat of reaction TRUE ANSWER : ? YOUR ANSWER : ?
A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ? Large reactor followed by smaller one Smaller reactor followed by larger one Data insufficient, can Either of the arrangement A or B will give the same yield 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/second Moles/litre.second Litre/mole Litre/mole.second TRUE ANSWER : ? YOUR ANSWER : ?
With increase in temperature, the equilibrium __________ rises in case of endothermic reaction. Constant Neither A nor B Both A & B Conversion TRUE ANSWER : ? YOUR ANSWER : ?
In a/an __________ vessel, the fluid enters and leaves following plug flow. Close-opened Open Closed Open-closed TRUE ANSWER : ? YOUR ANSWER : ?
A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length Increases Decreases First increases and then decreases Is at the highest allowable temperature throughout TRUE ANSWER : ? YOUR ANSWER : ?
An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is Maximum at the centre of the reactor Constant throughout the reactor Maximum at the exit of the reactor Maximum at the inlet of the reactor TRUE ANSWER : ? YOUR ANSWER : ?
If CA is the quantity of reactants initially present, the quantity left after 'n' half periods will be equal to (1/2)n.CA (CA)1/2n (CA)1/n (CA)n TRUE ANSWER : ? YOUR ANSWER : ?