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Free Online Mock Chemistry Multiple Choice Test on Chemical Kinetics
Sub Category : Chemical Kinetics Test : 11 Time Left :
1) Decomposition of H2O2 was studied by titration against KMnO4 solution. It was found that 0.4 mole of H2O2 was reduced to 0.2 mole in 20 minutes and to 0.1 mole in 40 minutes and to 0.05 mole after one hour. The order of reaction must be (1) 0 (2) 1 (3) 2 (4) 3.
  1 2 3 4
 
2)The rate of a gaseous reaction is halved when the volume of the vessel is doubled. The order of reaction is
(1) 0 (2) 1 (3) 2 (4) 3.
  1 2 3 4
 
3) A first order reaction is half-completed in 45 minutes. How long does it need for 99.9% of the reaction to be completed? (1) 20 hours (2) 10 hours (3) 7 hours (4) 5 hours.
1 2 3 4
 
4) A first order reaction is 75% completed after 32 minutes. When was 50% of the reaction completed?
(1) 4 minutes (2) 8 minutes (3) 16 minutes (4) 32 minutes.
1 2 3 4
 
5)99% of a first order reaction was completed in 32 min. when will 99.9% of the reaction complete?
(1)50min (2)46min (3)49min (4)48 min.
1 2 3 4
 
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