Chemical Reaction Engineering With increase in initial concentration, the fractional conversion of a first order reaction in a given time Increases Unpredictable Decreases Remains constant Increases Unpredictable Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance. Either A, B or C Diffusion through ash layer Chemical reaction Film diffusion Either A, B or C Diffusion through ash layer Chemical reaction Film diffusion ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Space time equals the mean residence time For CSTR For narrow diameter tubular reactor For large diameter tubular reactor When the density of the reaction mixture is constant For CSTR For narrow diameter tubular reactor For large diameter tubular reactor When the density of the reaction mixture is constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Study of chemical kinetics is the easiest in the case of __________ reactions. Surface Reversible Side Irreversible Surface Reversible Side Irreversible ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) E + ΔHA E ΔHA + ΔHR E + ΔHA - ΔHR E + ΔHA E ΔHA + ΔHR E + ΔHA - ΔHR ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering With increase in temperature, the equilibrium conversion of a reversible exothermic reaction Increases Remains unaffected Decreases linearily with temperature Decreases Increases Remains unaffected Decreases linearily with temperature Decreases ANSWER DOWNLOAD EXAMIANS APP
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