NEW
Font size
WorksheetsWaste Water Management Test
Total questions: 13
Worksheet time: 7mins
Waste water generated from paints and dyes industries contains harmful _________
Germs
Chemicals
___________ is the wastewater containing suspended impurities
Clarified water
Sewage
__________ is the liquid waste that is discharged into a river or the sea
Effluent
Contaminants
Sand, grit and pebbles are removed in ___________
Aeration tank
Grit chamber
An excessive growth of _____________ causes Eutrophication
Algae
Plants
____________ system is a channel system of pipelines used to carry sewage
Sewer
Onsite deposition
Air is blown into the sewage in ____________ tanks
Sedimentation
Aeration
________________ is produced by the action of bacteria on the organic matter of sludge
LPG
Biogas
Which of the following is not a source of wastewater?
Hospitals
Rain
Mining
Domestic activities
Which one of these is a mechanical process of treating water?
Screening of sewage
Aeration of sewage
Digestion of sewage
Addition of chlorine to water
what is the solid waste that settles at the bottom of the in the primary treatment of waste water called?
Sludge
Clarified water
Scum
Compost
Which one of these is a biological process of treating water?
Screening of sewage
Aeration of sewage
Exposure to ultraviolet light
Addition of Chlorine water
Which of the following treatments involves addition of chlorine?
Primary treatment
Secondary treatment
Tertiary treatment
Initial treatment
