JEE Main 2019 — Environmental Chemistry Question with Solution
JEE Main 2019 (09 Jan Shift 2)
Question
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Show full solutionCorrect option: A
Step-by-step explanation
Normal, clean rain has a pH value of between 5.0 and 5.6, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides produced from power plants and automobiles the rain becomes much more acidic. Typical acid rain has a pH value of 4.0.
Rain water becomes acidic because gases present in environment are dissolved, so it's pH will be less than 7.
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This is a previous-year question from JEE Main 2019, covering the Environmental Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.