113 JEE Main Environmental Chemistry PYQs (2004–2023) with verified answers and step-by-step solutions.
This page collects every JEE Main Environmental Chemistry previous-year question from Chemistry, 2004–2023. Each links to a full solution with a verified answer key. Click any year above to narrow the list, or open a question to study its step-by-step working and then practice it on PrepSharp's CBT player.
Which of the following compounds is an example of Freon?
The concentration of dissolved Oxygen in water for growth of fish should be more than X ¯   ppm and Biochemic…
Match List I with List II List I List II A Nitrogen oxides in air I Eutrophication B Methane in air II pH of rain water…
Which of these reactions is not a part of breakdown of ozone in stratosphere?
The industrial activity held least responsible for global warming is :
Which of the following are the Green house gases? A. Water vapour B.Ozone C. I 2 D.Molecular hydrogen Choose the most a…
Correct statement about smog is
The possibility of photochemical smog formation is more at
How can photochemical smog be controlled?
The water quality of a pond was analysed and its BOD was found to be 4 . The pond has
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