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In this process of purification of water, bleaching powder is added.

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Important Questions on Water

EASY
Science>Chemistry>Water>Potable Water

Define coagulation.

EASY
Science>Chemistry>Water>Potable Water
How are water bodies polluted?
MEDIUM
Science>Chemistry>Water>Potable Water
Name two useful substances which are produced by the treatment of sewage. State their uses.
MEDIUM
Science>Chemistry>Water>Potable Water
A disease caused by bacteria is
EASY
Science>Chemistry>Water>Potable Water
Explain the function of bar screen in a wastewater treatment plant.
MEDIUM
Science>Chemistry>Water>Potable Water
What is primary sludge? Explain how is it treated.
MEDIUM
Science>Chemistry>Water>Potable Water
What is the purpose of bubbling air into the aeration tank during the treatment of sewage?
MEDIUM
Science>Chemistry>Water>Potable Water
Discuss the processes involved in a sewage treatment plant in detail. 
 
EASY
Science>Chemistry>Water>Potable Water

Name the various contaminants present in sewage.

MEDIUM
Science>Chemistry>Water>Potable Water

What is activated sludge?

MEDIUM
Science>Chemistry>Water>Potable Water
Name two diseases which are caused by bacteria present in sewage.
EASY
Science>Chemistry>Water>Potable Water
What is meant by sewer?
EASY
Science>Chemistry>Water>Potable Water
Methane gas is not natural gas.
MEDIUM
Science>Chemistry>Water>Potable Water
What is sludge? Explain how it is treated.
MEDIUM
Science>Chemistry>Water>Potable Water

_____ is added to kill germs in the water.

MEDIUM
Science>Chemistry>Water>Potable Water
What type of microbes present in sewage cause diseases such as cholera and typhoid?
MEDIUM
Science>Chemistry>Water>Potable Water
What is eutrophication?
EASY
Science>Chemistry>Water>Potable Water
Which process during the wastewater treatment results in the proliferation of bacteria? 
 
EASY
Science>Chemistry>Water>Potable Water

Untreated human excreta is a health hazard. Explain.

MEDIUM
Science>Chemistry>Water>Potable Water
Why is the swimming pool water chlorinated?