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The amount of oxygen used by the suitabl...

The amount of oxygen used by the suitable microorganisms present in water during five days at `20^(@)C` is called as BOD. For pure water BOD is about 1 ppm fairly pure water 3 ppm and doubtful purity 5 ppm the municipal sewage has BOD values 100-4000 ppm.
BOD= Number of moles of `O_2` required / Number of liters of water sample
BOD is normally cxpressed for a time period of

A

5 hours

B

5 minutes

C

5 days

D

5 seconds

Text Solution

Verified by Experts

The correct Answer is:
C
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Pure water would have a BOD value of