waste water story class7
Authored by olivia noronha
Science
7th Grade
Used 73+ times
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8 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sludge in separate tanks is decomposed to get biogas by (a) bacteria
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following is used in vermi-processing toilet?
earthworm
cockroach
none of these
both of these
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sewage is mainly a (a) -waste
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Remove large objects from wastewater
(a)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Disinfect water
ozone
chlorine
ultraviolet radiation
all of these
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Period 2005-2015 is being celebrated as the international decade for action on
water for life
education for all
global war
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following is a step in wastewater treatment?
Aeration
Filtration
Chlorination
All of these
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