Wastewater Story Class 7 Quiz
Quiz
•
Chemistry
•
6th - 12th Grade
•
Practice Problem
•
Medium
shikha bhardwaj
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Anaerobic bacteria are added in the digester tank to decompose the organic matter to produce
biogas
Foul smell
sludge
sewage
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The organic impurities present in sewage are
Bacteria
phosphorus
human faeces
Nitrates
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Adopting good ________ practices should be our way of life
eating
Sanitation
reading
nome of these
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Floating impurities (such as grease and oils) in the sedimentation tank are removed by
Screens
skimmer
Cleaner
floater.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sewage treatment process involve
Removal of solid material
Sedimentation
Aeration of clarified water
All of these
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Waste water is treated in a ________.
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
The sludge is decomposed by________ bacteria.
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