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Wastewater Management (Class VII)

Wastewater Management

14 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Waterborne diseases are transmitted through contaminated water. Which of the following is not a waterborne disease?

  1. Typhoid
  2. Hepatitis C
  3. Cholera
  4. Dysentry
  5. Hepatitis A
Question 2 Multiple Choice (Single Answer)

On which of the following days is 'World Water Day' celebrated?

  1. 22nd March
  2. 11th July
  3. 7th April
  4. 5th June
  5. 1st January
Question 3 Multiple Choice (Single Answer)

Which of the following are not the organic impurities of sewage?

  1. Human feces
  2. Oils
  3. Herbicides
  4. Pesticides
  5. Phosphates
Question 4 Multiple Choice (Single Answer)

Which of the following factors is/are responsible for the scarcity of fresh water?

  1. Overpopulation
  2. Increased industrial development
  3. Pollution
  4. Construction activities
  5. All of the above
Question 5 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Foul-smelling gases are given off due to the decomposition of waste organic matter present in sewage by anaerobic bacteria.
b. Open drains are breeding places for mosquitoes and flies that cause diseases.
c. Aquatic animals die due to lack of hydrogen that is used by microorganisms decomposing the organic matter.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 6 Multiple Choice (Single Answer)

Microorganisms use up the water's oxygen and release poisonous gases. Which of the following gases is a poisonous gas released by microorganisms present in water?

  1. Helium
  2. Ammonia
  3. Nitrogen
  4. Hydrogen
  5. None of these
Question 7 Multiple Choice (Single Answer)

Which of the following is the correct full form of WWTP?

  1. World Wide Treatment Plant
  2. Waste Water Treatment Plant
  3. Waste Water Temporary Plant
  4. Waste Water Treatment Point
  5. World Water Treatment Plant
Question 8 Multiple Choice (Single Answer)

Which of the following processes is/are involved in the purification of water in a WWTP?

a. Sedimentation
b. Filtration
c. Distillation
d. Chlorination

  1. Only a
  2. Only a and b
  3. Only a, b and c
  4. Only b and d
  5. Only a, b and d
Question 9 Multiple Choice (Single Answer)

In the tertiary treatment, which of the following gases can be used to kill the disease-causing organisms?

  1. Oxygen
  2. Hydrogen
  3. Ozone
  4. Nitrogen
  5. Helium
Question 10 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Sewage system is like a transport system that carries sewage from the point of being produced to the point of disposal.
b. The treatment of sewage consists of two stages - primary treatment and secondary treatment.
c. Chlorination is done during the tertiary treatment stage to kill the disease-causing organisms.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 11 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Discharge of treated sewer in the water bodies is the main cause of water pollution.
b. In sedimentation tanks, the floating materials like oil and grease are removed by a skimmer.
c. The water obtained after scraping and skimming is called clarified water.

  1. Only a
  2. Both a and b
  3. Only b
  4. Both b and c
  5. Only c
Question 12 Multiple Choice (Single Answer)

Sewage is a liquid waste. Which of the following is/are included in sewage?

  1. Liquid wastes from kitchen and toilets
  2. Industrial waste
  3. Debris from roads and pathways
  4. Rainwater
  5. All of the above
Question 13 Multiple Choice (Single Answer)

Which of the following steps is/are not involved in the primary treatment of sewage in the treatment plant?

a. Sewage is passed through coarse screens or sieves.
b. The liquid is passed through a tank that removes grit and sand.
c. Chlorination is done to kill the disease causing organisms.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 14 Multiple Choice (Single Answer)

Which of the following is not a step that should be taken to maintain sanitation and avoid water pollution?

  1. It should be ensured that there are no open drains.
  2. Chemical waste from factories should be properly treated before its release into water.
  3. Proper toilet facilities should be provided to the rural people.
  4. Sewage from the cities should be discharged directly into rivers.
  5. It should be ensured that there are no leaking sewage pipes.
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