Question

Multiple Choice Questions
Biochemical oxygen demand may not be good index for water bodies receiving effluents from.

• A. Sugar industry
• B. Domestic sewage
• C. Dairy industry
• D. Petroleum industry

Answer 1

The correct option is D Petroleum industry

Biochemical Oxygen Demand or BOD is the amount of dissolved oxygen in a water body, required by microorganisms for the aerobic breakdown of organic matter in the water. Petroleum waste consists of inorganic constituents that also may cut off the oxygen supply into the water body thus BOD may not be a good index for water receiving effluents containing it.

So, the correct option is 'petroleum industry'.