-The standard BOD of water is taken for
A:-5 days at 20°C
B:-3 days at 20°C
C:-5 days at 27°C
D:-2 days at 27°C
Answer:A
-The standard BOD of water is taken for
A:-5 days at 20°C B:-3 days at 20°C C:-5 days at 27°C D:-2 days at 27°C