A human body required 0.01M activity of a radioactive substance after 24 hours. Half life of the radioactive substance is 6 hours. The injection of maximum activity of the radioactive substance that can be injected is :

Options

A. 0.08
B. 0.04
C. 0.16
D. 0.32

Answer

C

Explanation

`t_(1//2)=6` hr
`:.` 24 hr =4 half life periods
Activity after n-half lives `=([A]_(0))/(2^(n))`
`0.01M=([A]_(0))/(2^(4))`
`:.[A]_(0)=0.01xx16=0.16M`