Waste water story ch-18
Assessment
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Atifah Alam
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Science
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7th Grade
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24 plays
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Medium
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15 questions
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1.
Multiple Choice
which one of the following is a quality of wastewater?
Foul smell
bad taste
Dirty look
all of these
2.
Multiple Choice
Period 2005-2015 is being celebrated as the international decade for action on
water for life
education for all
global war
terrorism
3.
Multiple Choice
In sewerage manholes are located at every
20-25 m
50-60 m
90-100 m
100-110 m
4.
Multiple Choice
Which one of the following is a step in wastewater treatment?
Aeration
Filtration
Chlorination
All of these
5.
Multiple Choice
Sludge in separate tanks is decomposed to get biogas by
yeasts
aerobic bacteria
anaerobic bacteria
none of these
6.
Multiple Choice
Which one of the following is used in vermi-processing toilet?
Earthworm
Cockroach
Both of these
None of these
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