There is no correspondence between stoichiometric and the rate equation in case of a/an _____________ reaction? A. Elementary B. Multiple C. AutocatalyticD. Non-elementary
Specific rate constant for a second order reaction__________________? A. Is independent of temperature B. Varies with temperature C. Depends on the nature of the reactantsD. Both B. and C.
A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate…
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is________________? A. 1B. 2 C. 3 D. 4
Velocity of a reaction depends upon the_________________? A. Nature of the reactants B. Concentration of the reactants C. Temperature at which the reaction is carriedD. All A., B. and C.
From among the following, choose one which is not an exothermic process ? A. Methanol synthesisB. Catalytic cracking C. Ammonia synthesis D. Oxidation of sulphur
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…
The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is________________________? A. Backmix reactor B. Plug flow reactor C. Series of CSTR D. PFR in series
Pure ethanol vapor is fed to a reactor packed with alumina catalyst, at the rate of 100 kmole / hr. The reactor products comprise: ethylene: 95 kmole / hr, water vapour: 97.5 k mole / hr and diethyl ether: 2.5…
‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the_____________________? A. PressureB. Temperature C.…