Assertion: Water pollutants are measured by BOD.
Reason: If BOD is more, the water is polluted.

Correlate BOD with water pollution.

Water pollution is less if BOD is

Water pollution is less if BOD is

(b) BOD is an index of water pollution. Comment.

Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxygen is released

Assertion: Amount of biodegradable organic matter present in water is measured by BOD of water Reason: During biodegradation of organic compounds. Oxygen is released

Greater the BOD of sewage water, its polluting ability is:

Two questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the followng four responses. If both Assertion and Reason are true and Reason is a correct explanation of Assertions. If both Assertion and Reason are true but Reason is not a correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:BOD indicates the extent of water pollution by organic wastes. Reason:Increase in BOD decreases dissolved oxygen of waste water.