# Following the montreal protocol,by which year is it expected that ozone will be recovered

$\begin{array}{1 1}(a)\;2020\\(b)\;2025\\(c)\;2050\\(d)\;2040\end{array}$

2050
Scientists are positive that recovery would be by 2075
Hence (c) is the correct answer.
edited Nov 6, 2017 by meena.p