Chemical Kinetics Ques 17
17. A reaction is $50 \%$ completed in 2 hours and $75 \%$ completed in 4 hours. The order of reaction is
[NEET Kar. 2013]
(a) 0
(b) 1
(c) 2
(d) 3
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Answer:
Correct Answer: 17.(b)
Solution:
(b) For a first order reaction,
$ t _{75 \%} =2 \times t _{50 \%} $