JEE Main 2020 — Environmental Chemistry Question with Solution
JEE Main 2020 (05 Sep Shift 1)
Question
The condition that indicates a polluted environment is:
Choose an option
Show full solutionCorrect option: A
Correct answer
Aeutrophication
Step-by-step explanation
(2) Clean water would have B.O.D value of less than 5 ppm whereas highly polluted water coluld have a
B.O.D value of 17 ppm or more.
(3) The process in which nutrient enriched water bodies support a dense plant population which kill animal life by depriving it of oxygen results in subsequent loss of biodiversity is known as Eutrophication.
(4) If the concentration of dissolved oxygen of water is below 6 ppm, the growth of fish get inhibited.
B.O.D value of 17 ppm or more.
(3) The process in which nutrient enriched water bodies support a dense plant population which kill animal life by depriving it of oxygen results in subsequent loss of biodiversity is known as Eutrophication.
(4) If the concentration of dissolved oxygen of water is below 6 ppm, the growth of fish get inhibited.
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This is a previous-year question from JEE Main 2020, 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.