Tag: personal and public cleanliness

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Questions Related to personal and public cleanliness

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

Chlorine tablet is used to remove .......... from waste water.

  1. Odour

  2. Dark colour

  3. Bacteria

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorine tablets are added to wastewater or drinking water primarily as a disinfectant to kill harmful pathogenic bacteria and microorganisms. They do not remove odor or dark color.

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

Secondary sewage treatment is mainly a

  1. Biological process

  2. Physical process

  3. Mechanical process

  4. Chemical process
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sewage pollution can be prevented by treating sewage before passing into water course in sewage or effluent treatment plant.

The sewage treatment involves -
Primary treatment, secondary treatment and tertiary treatment. 
Primary treatment consists of shredding, churning, floatation, screening and sedimentation. 
In Secondary treatment the organic matter is decomposed by microorganisms and through sewage fungus by passing through water hyacinth pond, trickling filter method or activated sludge method. Aeration helps in oxidation of sludge. 
Tertiary treatment is a physico-chemical treatment for removing turbidity and dissolved substances.
So, the correct answer is 'Biological process'

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

Pollution can be controlled by:

  1. Sewage treatment

  2. Manufacturing electrically operated vehicles

  3. By checking atomic blasts

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Checking atomic blasts will reduce radioactive pollution. Sewage pollution can be prevented by treating sewage before passing into water course, in sewage treatment plant or effluent treatment plant (ETP). Electrically operated vehicles will control automobile exhaust and improve the air quality in cities.

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

Which of the following filter is used for filtration of wastewater?

  1. Sand filter

  2. Grit filter

  3. Cloth

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In wastewater treatment, both sand filters and grit chambers (or grit filters) are standard components used to remove solid particles and debris from the influent.

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

Rainwater can be preserved by building small reservoirs, contour building and

  1. wall

  2. roof

  3. dams

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

Rainwater harvesting involves capturing and storing water using structures like dams, contour bunds, and reservoirs to prevent runoff and increase groundwater recharge.

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

When harmful substances get mixed with water it becomes

  1. polluted

  2. muddy

  3. pure

  4. unclean
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water pollution is defined as the contamination of water bodies by harmful substances, which makes the water unsafe or unsuitable for its intended use.

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

Sewage water carry ______ that spread diseases.

  1. plants

  2. animals

  3. micro organisms

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

Sewage contains organic waste and various pathogens, including bacteria, viruses, and protozoa, which are microorganisms responsible for spreading water-borne diseases.

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

Which of the following is not a water borne disease?

  1. Diarrhoea

  2. Typhoid

  3. Hepatitis

  4. Conjunctivitis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Diarrhea, typhoid, and hepatitis are classic water-borne diseases. Conjunctivitis is an eye infection typically spread by direct contact or contaminated surfaces, not primarily through drinking water.

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

Waste water from industries contain

  1. microbes

  2. poisonous substances

  3. oil

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

Industrial wastewater often contains heavy metals, toxic chemicals, and other hazardous substances that are harmful to the environment and human health.