The ratio of oxygen available to the oxygen required for stabilisation – McqOptions

MCQOPTIONS

1.	The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
A.	bacterial stability factor.
B.	relative stability.
C.	biological oxygen demand (BOD).
D.	oxygen ion concentration.
Answer» C. biological oxygen demand (BOD).

Discussion

No Comment Found

Related MCQs

Beyond what concentration of HS in air, acute danger to human life exists ?
TLV of NO & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO causes
Exposure to SO containing chimney gases results in the
Which of the following plants does not emit appreciable amount of SO in atmosphere ?
The maximum CO is emitted into the atmosphere by
In water treatment, alum[Al(SO)] is used for the process of
Nitrogen oxides (NO) is not produced in the __________ industry.
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters?
Acute danger to human life (i.e. death) exists, if the concentration of CO in atmospheric air exceeds __________ percent (by volume).
Particles having diameter greater than 75 μm (micrometer = 10 mm) are called