Tag: sewage treatment

Questions Related to sewage treatment

The process of mixing chlorine in the water to kill the germs is  called

biology wastewater story basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this? water borne disease hygiene - a key to healthy life

  1. filtration

  2. chlorination

  3. purification

  4. distillation

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Correct Option: B

Dried sludge is used as

biology wastewater story basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this? water borne disease hygiene - a key to healthy life

  1. Manure

  2. Source for biogas

  3. fertilizers

  4. Both A and B

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Correct Option: A

Excess nitrates in water cause problems for the Chesapeake Bay because

zoology diseases and immunity basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this?

  1. They cause excessive cellular respiration in plants and animals, resulting in a large amount of carbon dioxide production.

  2. They cause excessive bacteria growth resulting in too much oxygen which hurts photosynthesis in plants.

  3. They cause excessive algae growth, blocking sunlight and reducing oxygen when the algae dies.

  4. Nitrates are poisonous to fish, crabs, and oysters.

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Correct Option: C

Mark the correct statement about nitrification


(a) Nitrification is important is agricultural system.
(b) Nitrification increase nitrogen leaching.
(c) Plays important role in removal of nitrogen from municipal waste water.

zoology diseases and immunity basics of water pollution sewage treatment wastewater treatment - need and methods personal and public cleanliness who will do this?

  1. a, b, c

  2. a, b

  3. a, c

  4. b, c

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Correct Option: A
Explanation:

Nitrification is a biological oxidation process includes convertion of Ammonia to Nitrate increases nitrogen leaching because nitrate is more water soluble than Ammonia.

An example of water-borne disease is 

evs who will do this? personal and public cleanliness basics of water pollution sewage treatment

  1. Scabies

  2. Influenza

  3. Trachoma

  4. Typhoid

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Correct Option: D

when children play bare-footed in pools of dirty water and flood water,they may suffer from

biology hygiene - a key to healthy life water borne disease basics of water pollution sewage treatment

  1. Leptospirosis and bilharzia

  2. Malaria ,amoebic dyscentry and leptospirosis

  3. Bilharzia,infective hepatitis and diarrhoea

  4. Guineaworm infection,elephantiasis and amoebic dyscentry

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Correct Option: C
Explanation:

  • Schistosomiasis, also known as snail fever and bilharzia is a disease caused by parasitic flatworms called schistosomes. The disease is spread by contact with fresh water contaminated with the parasites. The disease is especially common among children in developing countries, as they are more likely to play in contaminated water.
  • Hepatitis is an inflammation of the liver tissue. Hepatitis is majorly caused by the virus known as infective hepatitis. Infective hepatitis is mainly spread by contaminated food and water.
  • Diarrhoea is the condition of having at least three loose or liquid bowel movements each day. Diarrhoea lasts for a few days and can result in dehydration due to fluid loss. These infections are often acquired from food or water that has been contaminated by faeces, or directly from another person who is infected.
  • Hence, these diseases may occur when children play bare-footed in pools of dirty water and flood water.
So, the correct answer is 'Bilharzia, infective hepatitis and diarrhoea'.

Blue boy(Methenoglobinemia) disease is caused by the contamination of drinking water with ___________.

biology hygiene - a key to healthy life water borne disease basics of water pollution sewage treatment

  1. Chloride

  2. Nitrate

  3. Sulphate

  4. Iodide

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Correct Option: A

What causes bacillary, dysentry and diarrhoea in humans?

biology hygiene - a key to healthy life water borne disease basics of water pollution sewage treatment

  1. Bacteria

  2. Virus

  3. Food and Water contamination

  4. Amoeba

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Correct Option: C

Which of the following are water-borne diseases?

biology hygiene - a key to healthy life water borne disease basics of water pollution sewage treatment

  1. Influenza

  2. Cholera

  3. Malaria

  4. Tuberculosis

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Correct Option: B

Which one of the following diseases is not due to contamination of water ?

biology hygiene - a key to healthy life water borne disease basics of water pollution sewage treatment

  1. Hepatitis-B

  2. Jaundice

  3. Cholera

  4. Typhoid

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Correct Option: A
Explanation:

Hepatitis B is a viral infection. It shows symptoms like nausea, vomiting, weakness, fatigue, etc. It is a type of liver infection that develops liver cirrhosis at a later stage. It also increases the risk of developing liver failure or cancer. It is spread through sexual contact or from mother to fetus. 

So, option A is the correct answer.