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JEE CHEMISTRY MCQ: ENVIRONMENTAL CHEMISTRY
1
Hard
1 of 1
Understanding
+4 | -1
Which of the following statements about the depletion of
ozone layer is correct?
ozone layer is correct?
View answer and explanation
Correct option: C
Freons and chlorofluorocarbons are inert. Chemically,
they do not react with ozone in stratosphere.
they do not react with ozone in stratosphere.
Option B (Freons and chlorofluorocarbons are inert. Chemically, they do not react with ozone in stratosphere.) is correct because CFCs are unreactive in the troposphere, allowing them to reach the stratosphere where they are broken down by UV light, releasing chlorine radicals that deplete ozone.
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Given below are two Statements:
Statement I: Classical smog occurs in cool humid climate. It is a reducing mixture of smoke, fog and sulphur dioxide.
Statement II: Photochemical smog has components, ozone, nitric oxide, acrolein, formaldehyde, PAN etc.
In the light of the above statements, choose the most appropriate answer from the options given below. A substance which is not present in nature but added to atmosphere due to human activity and cause adverse effect on environment is called UV radiations bring about The main source of atmospheric pollution is Which of the following is a primary pollutant? Lead in water can cause:
Statement I: Classical smog occurs in cool humid climate. It is a reducing mixture of smoke, fog and sulphur dioxide.
Statement II: Photochemical smog has components, ozone, nitric oxide, acrolein, formaldehyde, PAN etc.
In the light of the above statements, choose the most appropriate answer from the options given below. A substance which is not present in nature but added to atmosphere due to human activity and cause adverse effect on environment is called UV radiations bring about The main source of atmospheric pollution is Which of the following is a primary pollutant? Lead in water can cause: