Tag: water borne diseases

Questions Related to water borne diseases

Mosquito larvae can be prevented to grow in ponds$/$ rice fields by inoculating them with

evs mosquitoes and malaria diseases caused by mosquitoes contaminated water spreads disease water borne diseases mosquito and human health

  1. Microcystis

  2. Aphanizomenon

  3. Oscillatoria

  4. Aulosira

Show answer
Correct Option: A
Explanation:

There are different ways to prevent mosquito larvae to grow in ponds and rice fields. These can be done by not allowing the water to get stagnant. Also, it can be prevented by inoculating it with Microcystis cyanobacteria. Microcystis aeruginosa causes death of the larvae by producing neurotoxins and hepatotoxins.

Thus, the correct answer is 'Microcystis.'

When domestic sewage mixes with river water

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Small animals like rats will die after drinking river - water

  2. The increased microbial. activity releases micronutrients such as iron

  3. The increased microbial activity uses up dissolved oxygen

  4. The river water is still suitable for drinking as impurities are only about 0.1%

Show answer
Correct Option: A
Explanation:

BOD (biochemical oxygen demand) refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria. The BOD test measures the rate of update of oxygen by microorganisms in a sample of water and thus, indirectly BOD is the measure of the organic matter present in the water. The greater the BOD of wastewater more is its polluting potential. 

So, the correct answer is 'Small animals like rats will die after drinking river - water'.

Larger amount of dissolved oxygen in water, faster will be

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Turbidity

  2. Reaeration

  3. Self Purification

  4. Currents

Show answer
Correct Option: C

Match the following items in column I with column II and choose the correct answer

 Column I  Column II
 A. Arsenic  1. Minamata disease
 B. Nitrate  2. Itai-itai
 C. Mecury  3. Blue-baby syndrome
 D. Cadmium  4. Skeletal fluorosis
 E. Fluoride  5. Black-foot disease

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. A-2, B-3, C-5, D-1, E-4

  2. A-5, B-3, C-1, D-2, E-4

  3. A-3, B-4, C-5, D-1, E-2

  4. A-5, B-4, C-3, D-2, E-1

  5. A-2, B-5, C-4, D-3, E-1

Show answer
Correct Option: B
Explanation:

Minamata disease is caused by mercury poisoning. It results in numbness, muscles weakness, loss of hearing, speech and reduces vision. 

Itai- Itai is the disease caused by cadmium poisoning. The victim feels pain in spines and joints. 
The blue baby syndrome also called as methemoglobinemia. It results in the mixing of deoxygenated and oxygenated blood due to non-closer of foramen ovale of heart. It results due high quantity of nitrate in water. 
Black foot disease is caused by consumption of contaminated water having a high quantity of arsenic. 
Skeletal fluorosis is a bone and joint disease caused by prolonged exposer to fluoride. Thus, the correct answer is option B.

Black-foot disease is caused due to groundwater contaminated with the excess amount of

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Nitrate

  2. Fluoride

  3. Arsenic

  4. Sulphur

  5. Mercury

Show answer
Correct Option: C
Explanation:

Arsenic comes from bedrock as well as surface leaching. Chronic exposure leads to repeated diarrhoea, peripheral neuritis, hyperkeratosis, transverse striations on fingernails, peripheral vascular insufficiency, vasospasm, hyperpigmentation leading to 'Black Foot Disease', lung inflammation, skin and lung cancer.

Sanitation at public places can be maintained by

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Proper drainage.

  2. Garbage management.

  3. Sufficient public toilet facilities.

  4. All of the above.

Show answer
Correct Option: D
Explanation:
  • Sanitation refers to public health conditions related to clean drinking water and adequate treatment and disposal of human wastes and sewage. Preventing human contact with feces is part of sanitation.
  • Sanitation at public places can be maintained by Proper drainage,Garbage management and Sufficient public toilet facilities.
  • So, the correct answer is 'All the above'.

The disease caused due to improper sanitation in public place is

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Pandemic.

  2. Non-communicable.

  3. Endemic.

  4. None of the above.

Show answer
Correct Option: C
Explanation:
  • An endemic disease is a disease that exists permanently in a particular region or population. Poor sanitation is linked to transmission of some endemic diseases such as cholera, diarrhea, dysentery, hepatitis A, typhoid and polio
  • Hence the disease caused due to improper sanitation in public place is endemic diseases.
  • So, the correct answer is 'Endemic'.

A disease can spread from one person to population by

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Improper sanitation in public places.

  2. Improper sanitation in home.

  3. Sharing of food.

  4. Sharing of water bottle.

Show answer
Correct Option: A
Explanation:
  • A disease can spread from one person to population by improper sanitation in public places because many disease-causing organisms can survive on the surface of the improperly sanitized public toilet seat, and for an infection to occur, the germs(bacteria, virus) would have to be transferred from the toilet seat to your urethral or genital tract, or through a cut or sore on the buttocks or thighs, which is possible.
  • Hence A disease can spread from one person to population by improper sanitation in public places.
  • So, the correct answer is 'improper sanitation in public places'.

Disease caused due to poor sanitation is

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. Cancer.

  2. Typhoid.

  3. Polio.

  4. Both B and C.

Show answer
Correct Option: D
Explanation:
  • Sanitation refers to public health conditions related to clean drinking water and adequate treatment and disposal of human wastes and sewage. Preventing human contact with feces is part of sanitation.
  • Poor sanitation is linked to transmission of diseases such as cholera, diarrhea, dysentery, hepatitis A, typhoid and polio because these diseases can be transmitted through the fecal-oral route when food or water is contaminated.
  • Hence Disease caused due to poor sanitation is typhoid and polio.
  • So, the correct answer is 'Both B and C'.

Atul is traveling from Mumbai to Nagpur by train, in between, he felt uneasy because

evs contaminated water spreads disease mosquitoes and malaria diseases caused by mosquitoes water borne diseases

  1. He used an improperly sanitized public toilet.

  2. He used the properly sanitized public toilet.

  3. He was already sick.

  4. None of the above.

Show answer
Correct Option: A
Explanation:
  • Many disease-causing organisms can survive on the surface of the improperly sanitized public toilet seat, and for an infection to occur, the germs(bacteria, virus) would have to be transferred from the toilet seat to your urethral or genital tract, or through a cut or sore on the buttocks or thighs, which is possible.
  • Hence when Atul is traveling from Mumbai to Nagpur by train, in between, he felt uneasy because he used an improperly sanitized public toilet.
  • So, the correct answer is 'He used an improperly sanitized public toilet'.