A) 30 min
B) 40 min
C) 50 min
D) 38 min
E) 45 min
Correct Answer: B
Solution :
10% of the solution is completed in 20 min. Next 20% of the reaction will be completed in next 20 min. Hence, 10%+ 9% =19% of the reaction will be completed in\[20+20=40\] min.You need to login to perform this action.
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