If 2 day and 4 day BOD values of a sewage sample are 120 mg/l and 180 mg/l respectively. Then,which of the following are true.
1
BOD rate constant (K) base e is 0.15 D-1
2
Ultimate BOD of the sewage sample is 240.18 mg/l
3
5 day BOD of the sample is 197.60mg/l
4
BOD remaining after 5 days is 199.65 mg/l