A sample of pond water contains 40mg of organic matter requires 32mg of dissolved oxygen. If pond water contains 100mg of organic matter per two litres, BOD value is

40 mg of organic matter require 32 mg of oxygen to get oxidized100 mg of organic matter requires→(x=?)x=3240×100=80mgBOD=number of 'mg' of O2sample of water(lit)=802=40ppm