The term Biological Oxygen Demand (BOD) is used in relation to
Options
A. potable water
B. cooling water
C. distilled water
D. industrial effluents
Correct Answer
industrial effluents
Environmental Engineering problems
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1. Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.