1.

Order 4 solutions in decreasing order of their BOD values?

A. Industrial water > river water > tap water > bottled water
B. Tap water > bottled water > river water > industrial water
C. Bottled water > tap water > river water > industrial water
D. River water > industrial water > tap water > bottled water
Answer» B. Tap water > bottled water > river water > industrial water


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