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During the course of a chemical react...

During the course of a chemical reaction , the rate constant ___.

A

Remains constant throughout

B

Increases as the reaction proceeds

C

Decreases as the reaction proceeds

D

First increases followed by a decreases

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The correct Answer is:
C
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AAKASH INSTITUTE-CHEMICAL KINETICS-ASSIGNMENT (SECTION A : Objective Type Questions)
  1. Which of the following does not affect the rate of reaction?

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  2. In a reaction, 2X + Y rarrX2Y , the X disappears at

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  3. During the course of a chemical reaction , the rate constant .

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  4. A reaction involiving two different reactants can never be:

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  5. For the hypothetical reaction 2A rarr3C , the reaction rate r in term...

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  6. In the reaction A +2B rarr C +2O the initial rate (-d[A])/(dt) at t=0w...

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  7. For the reaction N(2) + 3 H(2) to 2 NH(3) The rate of change of conc...

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  8. The graph plotted between concentration versus time

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  9. For reaction, 2B+A rarr 2C Which of the following is correct ?

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  10. For the homogeneous elementary reaction, A+B rarrC, the unit of rate ...

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  11. The rate law for a reaction between the substances A and B is given by...

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  12. Consider the reaction, 2A + B rarr C + D , If the rate expression is...

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  13. The rate constant is numerically the same for three reaction of first ...

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  14. Assuring an elementary reaction H2O2+3I^(-)+2H^(+)rarr2H2O+I3^(-) . Th...

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  15. For a reaction A+B rarr products, the rate of reaction was doubled whe...

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  16. The overall order of reaction between X & Y is 3. Which of the followi...

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  17. For a zero order reaction, K=1xx10^(-3)"mol L"^(-1)s^(-1) If initi...

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  18. Which of the following statement is not correct ?

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  19. Consider the following in respect of zero order reaction. I. t(1//2)...

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  20. If initial concentration is reduced to 1//4^(th) in a zero order react...

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