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JEE • CHEMISTRY • ENVIRONMENTAL CHEMISTRY
Environmental chemistry practice · Hard
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Practice format and chapter quiz
These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.
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1
Hard
1 of 3
Remembering
+4 | -1
Which of the following statements is false?
View answer and explanation
Correct option: A
London smog is oxidising in nature
Option A (London smog is oxidising in nature) is correct because London smog, also known as classical smog, is reducing in nature, not oxidizing.
2
Hard
2 of 3
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.
3
Hard
3 of 3
Remembering
+4 | -1
Formation of London smog takes place in
View answer and explanation
Correct option: D
Winter during morning time
Option D (Winter during morning time) is correct because London smog (also known as classical smog) forms in cold, humid conditions during winter mornings due to the accumulation of smoke and sulfur dioxide.
Revision notes and key takeaways
Review ENVIRONMENTAL CHEMISTRY in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
- ✓ This set contains 3 single-correct-answer MCQs on ENVIRONMENTAL CHEMISTRY.
- ✓ Try each question before opening its answer. Read the explanation where one is available.
- ✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.
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