Ozone present in which of the layer in earth’s atmosphere is considered as pollutant and is not desirable:

Which of the following represents ozone gas molecule:

CFCs have atmospheric lifetimes ranging from over ______ :

Which one of the following is largest ozone depletion substation that is emitted through activities of human:

By _______, R-22 (HCFC) refrigerant will no longer be produced or imported.

One chlorine or bromine radical liberated has the capability to act as catalyst and breakdown ____number of ozone molecules:

Production of Halons were phased out by ______ :

The ozone layer is mainly found at _____ above the surface of the earth

The severe ozone depletion known as the “ozone hole” exist in which of the following continent:

Ozone in the Earth’s stratosphere is created by UV light striking ____ molecule

Which of the following atoms cause significant depletion of the ozone layer:

Which of the following is more reactive in lower atmosphere (Troposphere):

Number of countries signed Montreal Protocol is _____ :

The Montreal Protocol treaty has been amended to ban CFC production after _____ in the developed countries:

Which of the following compounds have less severe effect on ozone layer: