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WorksheetsWastewater Story Revision
Total questions: 27
Worksheet time: 14mins
Which of the following is/are products of wastewater treatment?
Biogas
Sludge
Both biogas and sludge
Aerator
Which is the quality of water waste?
Dirty look
Foul smell
Mixed with lather
All of these
Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?
Cholera
Typhoid
Asthma
Dysentery
Sewage treatment
is a process of waste water treatment.
refers to waste water that is released by homes, industries, hospitals etc.
refers to the rain water that run down the streets during heavy rains.
All of the above
In the treatment of waste water, following steps are involved. (i) aeration (ii) removal of large objects (iii) chlorination The correct order of these steps is
(i),(iii),(ii)
(iii), (ii), (i)
(i), (ii), (iii)
(ii), (i), (iii)
We should not throw cooking oil and paint down the drain because
they break the pipe
they harden and clog the pipe
they flow through the drain freely
None of these
Which of the following is a good practice be followed?
Cooking oil and paint should not be thrown down a drain.
Used tea leaves, solid food and cotton should not be thrown in the drain.
Chemicals like insecticides should not throw in the drain.
All of the above
Which process during waste water treatment helps in eliminating germs?
Aeration
Sedimentation
Chlorination
None of the above
Dried _____ is used as manure
slury
sewage
sand
sludge
In vermi-processing toilet the human excreta is treated by
Redworm
Tapeworm
Earthworm
Roundworm
Which gas is released during treatment of sludge?
(a)
Large objects and garbage in the wastewater are removed by passing them through the (a)
Cleaning of water is a process of removing (a) .
Name the toilets used in areas with limited water supply.
(a)
Water which is cleared from the floatable substances like oil and grease by a skimmer is called
(a)
Which of these create water pollution?
Which is the first process of Wastewater Treatment Plant(WWTP)?
Bar screen
Grit and sand removal tank
Water clarifier
Aerator
Any 1 method of reducing water pollution.
Water that is not fit for use is called
clean water
wastewater
both (a) and (b)
none of these
Which of the following is not a source of wastewater?
Industries
Homes
Sewers
Hospitals
The period of International Decade for action on ‘Water for Life’ is
2000-2010
2005-2015
2010-2020
2003-2013
Suspended impurities contained by sewage are called
contaminants
sludge
grey water
none of these
Solid waste extracted during sewage treatment is known as
(a)
(a) is the equipment that removes floatable particles from wastewater is
Which of the following is a step of wastewater treatment?
Aeration
Chlorination
Filtration
All of these
Tuberculosis is a water-borne disease?
True
False
Sewage is mainly a
liquid waste
solid waste
gaseous waste
Mixture of solid and gas
