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MCQ Questions for class 7 Science Wastewater story

Are you looking for interactive MCQ Questions for class 7 Science Wastewater story then you are at the right place.

Below is the Quiz for class 7 Science chapter Wastewater story. You can Tap on the Start Quiz to begin playing the MCQs.

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Time: 00min : 00s

Total Questions: 10

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Q1. How to clean water?

  1. By removing pollutants from water
  2. By mixing harmful substance in water
  3. By drinking it
  4. None of the above
Answer: By removing pollutants from water

Q2. What is sewage treatment?

  1. Repairing of sewage
  2. Polluting the sewage
  3. Treatment of wastewater
  4. None of the above
Answer: Treatment of wastewater

Q3. Why do water gets dirty?

  1. Because of waste materials such as plastics
  2. Because of flushing chemicals in water
  3. Because of throwing garbage in water
  4. All of the above
Answer: All of the above

Q4. What is the full form of WWTP?

  1. World wide treatment plant
  2. Wide water tap plant
  3. Wastewater treatment plant
  4. Wide water treatment plant
Answer: Wastewater treatment plant

Q5. Which of the following is a method of water treatment?

  1. Vaporisation
  2. Condensation
  3. Filtration
  4. All of the above
Answer: Filtration

Q6. What is the use of wastewater treatment plant?

  1. To store water for future use
  2. To purify the water from pollutants
  3. To waste water
  4. To get rid of water
Answer: To purify the water from pollutants

Q7. Which chemical is used to purify the water?

  1. Sodium
  2. Chlorine
  3. Magnesium
  4. Methane
Answer: Chlorine

Q8. What is biogas?

  1. It is a fuel produced by anaerobic bacteria during water filtration
  2. It is a gas released from vehicles
  3. It is a harmful gas that must be avoided
  4. All of the above
Answer: It is a fuel produced by anaerobic bacteria during water filtration

Q9. Dried ____________ is used as manure

  1. Sludge
  2. Water
  3. Sand
  4. Pebbles
Answer: Sludge

Q10. Wastewater released by houses is called ____________.

  1. Garbage
  2. Water
  3. Sewage
  4. All of the above
Answer: Sewage

Q11. Cleaning of water is a process of removing ____________.

  1. Impurities
  2. Water
  3. Organisms
  4. All of the above
Answer: Impurities

Q12. Why it is important to purify water?

  1. Because it is used for drinking and other purposes
  2. Because it contains harmful chemicals
  3. Because it is our lifeline
  4. All of the above
Answer: All of the above