Among the following,the one that is not a greenhouse gas is

Give the details of the different layers of the atmosphere and briefly describe the substances present in them.

Which principle of green chemistry highlights that the protection of a selective group is not advantageous?

How does the depletion of ozone layer occur by chlorofluorocarbons?

The concentration of dissolved oxygen in water for the growth of fish should be more than $X \ ppm$ and the Biochemical Oxygen Demand $(BOD)$ in clean water should be less than $Y \ ppm$. $X$ and $Y$ in $ppm$ are,respectively:

$BOD$ stands for