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Did you know hippopotamuses have killed more people in Africa than any other animal.

Defeat is not bitter unless you swallow it– Joe Clark

Class VII >> Science >> Wastewater Story >> A1

Q1	What is the covered lid of a sewer drain called?
A	Manhole Cover
B	Flip Top
C	Sink Hole
D	Sewer Lid

Q2	Waste material produced by automobiles is called __________.
A	Effluent
B	Emission
C	Garbage
D	Sewage

Q3	The process of removing contaminants from wastewater is called __________.
A	Sewage Treatment
B	Rainwater Harvesting
C	Composting
D	Eutrophication

Q4	Vehicle emission falls under the category of __________.
A	Solid Waste
B	Liquid Waste
C	Gaseous Waste
D	All of the Above

Q5	What is the solid waste of sewage water called?
A	Residue
B	Scum
C	Lather
D	Sludge

Q6	Which of the following feature makes water fit for human consumption?
A	Transparent and Odourless
B	Rich in Lather
C	Mixed with Oil
D	Foul Smell

Q7	__________ is treated in a sewage treatment plant.
A	Hard Water
B	Wastewater
C	Fresh Water
D	Potable Water

Q8	Which of the following is an alternative method of sewage disposal?
A	Septic Tanks
B	Biogas Plants
C	Vermi-composting Toilets
D	All of the Above

Q9	Bacteria present in sewage can cause __________.
A	Cholera
B	Asthma
C	Chicken pox
D	Malaria

Q10	Large pipes that carry waste water away from homes or factories are called __________.
A	Sewers
B	Septic Tanks
C	Hose Pipes
D	Rain Water Harvesters

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