EASY
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Domestic sewage is .

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Important Questions on Water

EASY
Science>Chemistry>Water>Water Pollution
Name any three impurities that make water unfit for use.
HARD
Science>Chemistry>Water>Water Pollution
What is a septic tank? Describe the septic tank based toilet with the help of a labelled diagram. Where are septic tank toilets used?
MEDIUM
Science>Chemistry>Water>Water Pollution
A disease caused by bacteria is
MEDIUM
Science>Chemistry>Water>Water Pollution
What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or seas.
MEDIUM
Science>Chemistry>Water>Water Pollution
Explain why, it is harmful to discharge untreated sewage into rivers, lakes or ground.
EASY
Science>Chemistry>Water>Water Pollution
What is meant by sewerage?
MEDIUM
Science>Chemistry>Water>Water Pollution
Name the nutrients that cause eutrophication.
EASY
Science>Chemistry>Water>Water Pollution
How are water bodies polluted?
MEDIUM
Science>Chemistry>Water>Water Pollution
What is a vermi-processing toilet? Name the useful by-product obtained from such toilets.
MEDIUM
Science>Chemistry>Water>Water Pollution
Name two diseases which are caused by bacteria present in sewage.
MEDIUM
Science>Chemistry>Water>Water Pollution
Untreated human excreta is a health hazard. Explain.
MEDIUM
Science>Chemistry>Water>Water Pollution
What is Sewage? State the various ways in which we produce sewage in our homes? What is the name of underground pipelines which carry sewage from our homes to the wastewater treatment plants?
MEDIUM
Science>Chemistry>Water>Water Pollution
What type of toilets are used in aeroplanes?
EASY
Science>Chemistry>Water>Water Pollution
Domestic sewage is a biodegradable waste.
MEDIUM
Science>Chemistry>Water>Water Pollution
What is eutrophication?
EASY
Science>Chemistry>Water>Water Pollution
What is meant by sewer?
EASY
Science>Chemistry>Water>Water Pollution

Untreated human excreta is a health hazard. Explain.

EASY
Science>Chemistry>Water>Water Pollution

Name the various contaminants present in sewage.

MEDIUM
Science>Chemistry>Water>Water Pollution
What type of microbes present in sewage cause diseases such as cholera and typhoid?
HARD
Science>Chemistry>Water>Water Pollution
What is meant by the ‘treatment of sewage’? What is its main purpose?