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WorksheetsGrade 7 Quiz: Waste Management
Total questions: 15
Worksheet time: 15mins
Which one of the following is a step in wastewater treatment?
Aeration
Filtration
Chlorination
All of these
The picture shows chemicals are disposed into the river. What is the best practice to manage this waste? More than one answer.
Put the chemicals in the container, seal it and throw in the river.
Put the chemicals in the container, seal it and bury it underground.
Treat the chemicals before releasing to the river.
Pour the chemicals in dustbin.
Examples of
inorganic impurities
nitrates
human wastes
phosphates
Amoeba
What trees should
be planted along sewage ponds?
Eucalyptus
Coconut
Palm
Mango
What percent of
activated sludge is water?
55%
26%
97%
38%
The clean water
which we can drink is called (a) .
Chemical products
Medicines
Machine oils
Insecticides
Food remains
What all shouldn't be thrown in the drains?
Leftover food
Solid wastes
none of the above
both of the above
Some water borne diseases are-
Typhoid
Cholera
Polio
None of the above
Examples of on site sewage disposal systems-
Septic tanks
Toilet
Both of them
What is shown in this image?
Man hole
PVC sewage pipe
Sewer
Sewer main
The sewer mains flow into progressively larger pipes until they reach the_________
Homes
Communities
wastewater treatment plants
None of the above
What happens in a wastewater treatment plant ?
Waste water is released into the environment directly.
Wastewater is treated so that it is safe enough to be released into the environment.
Water for life
decade
2009-2019
2002-2012
2005-2015
2008-2018
Among the following, which object can be recycled?
Concrete
Compost
Glass
Soil
