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For a 1st order reaction, the time requi...

For a 1st order reaction, the time required for 99.9% completion is

A

ten times the time required for half competion of reaction

B

three times the time required for 90% completion of reaction

C

five times the time required for 75% completion of reaction

D

all are correct

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The correct Answer is:
D
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USHA PUBLICATION-CHEMICAL KINETICS-EXERCISE
  1. The rate of a reaction Ararr product, increases by a factor of 100, wh...

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  2. The rate constant of a reaction is 2xx10^-5 sec^-1. If the initial con...

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  3. For a 1st order reaction, the time required for 99.9% completion is

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  4. The half life period for a 1st order reaction is 6.93 sec., its rate c...

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  5. Alkaline hydrolysis of ester is an example of

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  6. The rate of a reaction depends upon

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  7. The rate constant of a reaction depends upon

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  8. For a reaction, H2O2rarrH2O2+1//2O2 ({d [H2O2])}/{dt}=K1[H2O2], (d[H2O...

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  9. The rate constant of a reaction is independent of

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  10. The unit of rate constant for 2nd order reaction is

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  11. If the rate of formation of NH3 for the reaction N2+3H2rarr2NH3 is 2xx...

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  12. The half life period for a zero order reaction is equal to

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  13. For a 1st order reaction log K is plotted against 1/T and, the slope o...

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  14. Which of the following statements regarding molecularity is wrong ?

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  15. For a chemical change 2A+3Brarr Product's the rates w.r.t. 'A' is r1 a...

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  16. The rate constant for the reaction 2N2O5rarr2N2O4 +O2 is 3xx10^-5 sec^...

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  17. Which of the following curves represents 1st order reaction ?

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  18. Which equation gives relationship between rate-constant and tempeature...

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  19. At 25^@C the half life of decomposition of H2O2 is 50 min. If initiall...

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  20. The rate constant is numerically same for three reactions of 1st, 2nd ...

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