21 JEE Main 2023 Environmental Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2023 previous-year questions from the Environmental Chemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Environmental Chemistry chapter hub.
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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