In a consecutive reaction system when E1 is much greater than E2, the yield of B

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Question
In a consecutive reaction system when E₁ is much greater than E₂, the yield of B increases with the
Options
A. increase of temperature.
B. decrease of temperature.
C. increase in initial concentration of A.
D. decrease in initial concentration of A.

Correct Answer

increase of temperature.

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5. 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
Options
A. decreases.
B. increases.
C. is at the highest allowable temperature throughout.
D. first increases and then decreases.

7. For a heterogeneous catalytic reaction
Options
A. free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction.
B. a relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important.
C. the catalyst does not form an intermediate complex with the reactant.
D. the surface of the catalyst does not play an important role during reaction.

9. What is the order of a chemical reaction, , if the rate of formation of 'C', increases by a factor of 2.82 on doubling the concentration of 'A' and increases by a factor of 9 on trebling the concentration of 'B'?
Options
A. 7/2
B. 7/4
C. 5/2
D. 5/4

10. Pick out the correct statement.
Options
A. In catalytic reactions, the catalyst reacts with the reactants.
B. A catalyst initiates a chemical reaction.
C. A catalyst lowers the activation energy of the reacting molecules.
D. A catalyst can not be recovered chemi cally unchanged at the end of the chemical reaction.

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