Tag: wastewater treatment - need and methods

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Multiple choice 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

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

  1. filtration

  2. chlorination

  3. purification

  4. distillation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chlorination is the specific chemical process of adding chlorine to water to disinfect it and kill harmful germs. Filtration removes physical particles, whereas chlorination targets biological pathogens.

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

Excess nitrates in water cause problems for the Chesapeake Bay because

  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.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Excess nitrates from runoff lead to eutrophication, causing rapid algae growth. When this algae dies, its decomposition by bacteria consumes dissolved oxygen, creating hypoxic conditions that harm aquatic life.

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

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.

  1. a, b, c

  2. a, b

  3. a, c

  4. b, c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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