____________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction ?
A. Gas film diffusion
B. Ash diffusion
C. Chemical reaction
D. None of these
A. Gas film diffusion
B. Ash diffusion
C. Chemical reaction
D. None of these
A. (1 + x)
B. (1 – x)
C. (1 + x)2
D. (1 – x)2
A. And decreases that of backward reaction
B. And backward reaction equally
C. Only
D. To a greater extent than that of the backward reaction
A. Concentration of the reactant
B. Temperature
C. Concentration of the product
D. Time
The rate constant of a first order reaction depends on the ________________? Read More »
Chemical Reaction A. Are the same as those of the rate constant
B. Depend on the order of the reaction
C. Depend on temperature, pressure etc. of the reaction
D. Are cycles per unit time
The units of frequency factor in Arrhenius equation_________________? Read More »
Chemical Reaction A. 0
B. 1
C. 2
D. 3
A. Increases
B. Decreases
C. Either A. or B.; depends on the type of catalyst
D. Neither A. nor B.
A catalyst in a chemical reaction _______________ free energy change in the reaction? Read More »
Chemical Reaction A. ∞
B. 0
C. 1
D. > 1
A. Activation
B. Potential
C. Kinetic
D. None of these
A. Catalytic
B. Parallel
C. Series
D. Auto catalytic