Halons used in fire extinguishers which contain ______ atoms:

Halons has ______ ozone depletion potential (ODP) compared to CFCs:

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

CFCs have atmospheric lifetimes ranging from over ______ :

Number of countries signed Montreal Protocol is _____ :

Which of the following is an agricultural fumigant that has significant ozone depletion potential:

Production of Halons were phased out by ______ :

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

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

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

Ozone depletion potential (ODP) for HCFCs will be in the range of:

Which of the following refrigerant is most common alternative to R-22  (HCFC):

Production of Methyl Bromide is phased out by _____:

After _____ , only recovered, recycled, or reclaimed supplies of R-22 will be available.

Which of the following substance has the Ozone Depletion Potential (ODP) greater than 1:

HFCs substances have zero ozone depletion potential and zero global warming potential: