chapter 6. CHEMICAL KINETICS class 12 chemistry textbook solution

1. Choose the most correct option.

iv. Time required for 90 % completion of a certain first order reaction is t. The time required for 99.9 % completion will be
a. t

b. 2t
c. t/2

d. 3t

Answer:- 

Time required for 90 % completion of a certain first order reaction is t. The time required for 99.9 % completion will be 3t

chapter 6. CHEMICAL KINETICS class 12 chemistry textbook solution page 135