JEE Main 2018 — Environmental Chemistry Question with Solution
From: JEE Main 2018 (Online) 15th April Evening Slot
Question
Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct ?
Choose an option
Show full solutionCorrect option: D
Correct answer
DPolluted water has BOD value higher than 10 ppm.
Step-by-step explanation
Aerobic bacteria decreases the BOD value and aerobic bacteria increase the BOD value. Clear water has BOD value less than 5 ppm. Polluted water has BOD value higher than 10 ppm.
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This is a previous-year question from JEE Main 2018, 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.