In case of physical adsorption, the heat of adsorption is of the order of _____________ kcal/kg mole?

A. 100
B. 1000
C. 10000
D. 100000

The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the__________________?

A. Reaction is elementary with a molecularity of 2
B. Molecularity of the reaction is 2, but the reaction may not be elementary
C. Reaction may be elementary with molecularity of 2
D. Reaction is elementary but the molecularity may not be 2

A space time of 3 hours for a flow reactor means that___________________?

A. The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours
B. Three reactor volumes of feed can be processed every hour
C. It takes three hours to dump the entire volume of the reactor with feed
D. Conversion is cent per cent after three hours

The half life period of a first order reaction is given by (where, K = rate constant) ?

A. 1.5 K
B. 2.5 K
C. 0.693/K
D. 6.93 K

Kinetics of a catalytic reaction can be best studied on a/an ______________ reactor?

A. Mixed
B. Integral (plug flow)
C. Differential (flow)
D. Either A., B. and C.

For a zero order chemical reaction, the__________________?

A. Half life period is directly proportion to the initial concentration of the reactants
B. Plot of products concentration with time is a straight line through the origin
C. Products concentration increases linearly with time
D. All A., B. and C.

In an exothermic chemical reaction, the reactants compared to the products have__________________?

A. Higher temperature
B. More energy
C. Less energy
D. Same energy

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 ?

A. Litre/mole.second
B. Moles/litre.second
C. Litre/mole
D. Litre/second

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?

A. Increase
B. Decrease
C. Remain same
D. Data in insufficient; can’t be predicted

In Langmuir treatment of adsorption,_________________?

A. Whole surface of the catalyst does not have the same activity for adsorption and there is
attraction between the adsorbed molecule
B. Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site
C. All the adsorption does not take place by the same mechanism