Air Pollution
Telangana Open School (TOSS) · Class 12 · Chemistry
Most important questions from Air Pollution for Telangana Open School (TOSS) Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which layer of the atmosphere contains the ozone layer?
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Stratosphere
The stratosphere contains a high concentration of ozone, which absorbs harmful UV radiation.
What is the main cause of acid rain?
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Release of SO₂ and NOx
Sulphur dioxide (SO₂) and nitrogen oxides (NOx) react with water vapour to form sulphuric and nitric acids, causing acid rain.
Which pollutant is responsible for the formation of photochemical smog?
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NOx and hydrocarbons
Nitrogen oxides and hydrocarbons react under sunlight to form photochemical smog, including ozone and PAN.
Which gas is primarily responsible for the greenhouse effect?
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Carbon dioxide
Carbon dioxide traps heat in the atmosphere and is a major greenhouse gas contributing to global warming.
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