JEE Main 2019 — Environmental Chemistry Question with Solution
JEE Main 2019 (12 Jan Shift 1)
Question
Water samples with values of ppm and ppm, respectively, are:
Choose an option
Show full solutionCorrect option: D
Correct answer
DClean and Highly polluted
Step-by-step explanation
Clean water has a BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of ppm so more polluted.
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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.