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The instrument used to remove oil and gr...

The instrument used to remove oil and grease in sludge is

A

Scraper

B

Skimmer

C

Floater

D

Bar screen

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NCERT TELUGU-Water Too Little To Waste-Exercise
  1. Pumping of water into air for purifications is called.

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  2. Which of the component is essential for metabolic activity?

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  3. It is an example of organic impurities

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  4. The following is an organic impurity came from agriculture industry.

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  5. The instrument used to remove oil and grease in sludge is

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  6. The following is a water conservation construction.

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  7. The following is a rainfed crop

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  8. What is meant by sewage ?

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  9. Mention the sources of sewage.

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  10. What is the chemical substance used for killing microbes in waste wate...

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  11. If you are allowed to visit a sewage treatment plant, what doubts you ...

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  12. What are the materials used for observing changes in waste water at tr...

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  13. Read the table and answer the question that follows: What is the natu...

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  14. Read the table and answer the question that follows: The type of wate...

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  15. Read the table and answer the question that follows: How are we using...

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  16. Read the table and answer the question that follows: Where do we obta...

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  17. How is water contaminated in urban areas?

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  18. What is meant by 'Chlorination' and 'Aeration'?

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  19. Why should oils and fats not be released into the drain? Explain.

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  20. What would happen if there are no microbes that break down wastes in s...

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