JEE Main 2019 — Environmental Chemistry Question with Solution
From: JEE Main 2019 (Online) 12th January Morning Slot
Question
Water samples with BOD values of 4 ppm and 18 ppm, respectively are :
Choose an option
Show full solutionCorrect option: A
Correct answer
AClean and Highly polluted
Step-by-step explanation
Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a
BOD value of 17 ppm or more.
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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.