Bio-chemical oxygen demand (BOD) for the first 20 days in generally re – McqOptions

MCQOPTIONS

1.	Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to_______________?
A.	Initial demand
B.	First stage demand
C.	Carbonaceous demand
D.	All of these
Answer» E.

Discussion

No Comment Found

Related MCQs

If is the diameter of a circular sewer and is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is
The detention time () of a settling tank, may be defined as the time required for
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is
For estimating the peak run off the rational formula = 0.0278 KpA was evolved by
If the depth of flow in a circular sewer is 1/4th of its diameter , the wetted perimeter is
The Chezy's constant in the formula = depends upon
For the open drain ( = 0.025) shown in the below figure, the discharge is
5 days-biochemical oxygen demand (BOD) is taken at a temperature of
value of sludge during alkaline regression stage, is
For a circular sewer of diameter running partially full with central angle α,