A) 100 yr
B) 50 yr
C) 5yr
D) 10 yr
Correct Answer: D
Solution :
Key Idea: The half-life of reaction is the time it takes to reduce to half of its original amount. \[\because \] The half-life of reaction of hydrolysis of DDT is 10 yr. \[\therefore \] Time required to hydrolyse 10 g DDT to half = 10 yrs.
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