If 60 % of a first order reaction was co...

If 60 % of a first order reaction was completed in 60 minutes, 50 % of the same reaction would be completed in approximately
[log = 4 = 0.60, log 5 = 0.69].

A

50 minutes

B

45 minutes

C

60 minutes

D

40 minutes

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The correct Answer is:

B

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