Environmental Chemistry: JEE Main 2019 Chemistry question

JEE Main 2019 · 12 Jan, Morning shift · Q1086

JEE Main 201912 Jan, Morning shiftChemistryEasyEnvironmental Chemistry92× since 2004

Water samples with BOD values of 4 ppm and 18 ppm, respectively are :

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JEE Main 2019 Environmental Chemistry Question with Solution (12 Jan Morning shift, Q1086) | JEE Arc