JEE Main 20205 Sep, Morning shiftChemistryEasyEnvironmental Chemistry92× since 2004The condition that indicates a polluted environment is :AOption A. BOD value of 5 ppmBOption B. eutrophicationCOption C. 0.03% of CO₂ in the atmosphereDOption D. pH of rain water to be 5.6CheckSkip · show solution
