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 of the water sample is.

A sample of pond water contains 40mg of organic matter requires 32mg o

1.	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 of the water sample is.
Answer» 10 PPM 30 ppm 20 ppm 40 ppm Answer :D