Major cause of Ozone depletion is due to which chemical?

A ChloroFluoroCarbons
B Polyphenols
C Dioxins
D Rayon

Correct Answer: ChloroFluoroCarbons

Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
Bissoy MCQ
#General Knowledge #Environmental Science

Related Questions

Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?
A Nitrous oxide
B Carbon dioxide
C Chlorofluorocarbon
D Sulphur dioxide
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
A CO
B SO2
C NOx
D CFC (chloro fluoro carbons)
Depletion of ozone layer in the outer atmosphere may cause
A Lung cancer
B Skin cancer
C Bronchitis
D Heart disorder
The depletion of ozone layer is due to
A Chlorofluorocarbons
B Carbon dioxide
C Sulphur dioxide
D Ethane
The depletion of Ozone layer is mainly due to
A Volcanic eruptions
B Aviation fuels
C Radioactive rays
D Chlorofluorocarbons
Under the depletion allowance method in computing depreciation, the depletion charge is equal to either ______ whichever is smaller.
A Fixed percentage of gross income or the net taxable income
B Fixed percentage of gross income or 50% of the net taxable income
C 50% of the fixed percentage of gross income or 50% of the net taxable income
D 50% of the fixed percentage of gross income or the net taxable income
The depletion allowance method of computing depletion is commonly known as ______.
A Unit method
B Percentage method
C Factor method
D Sinking fund method
Release of which among the following is the primary reason for depletion of the ozone layer?
A Nitrous oxide
B Hydrogen dioxide
C Chlorofluro carbon
D Carbon monoxide
Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?
A Chlorofluorocarbons
B Nitrous oxide
C Sulphur dioxide
D Carbon dioxide
_________ is the first country to have phased out the CFCs and HCFCs which are responsible for the depletion of the ozone layer.
A Denmark
B Germany
C France
D Spain

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