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Which of the following is not true about...

Which of the following is not true about sewage(i) Sewage is more in rural areas(ii) Sewage water is useful for crop plants (iii) Nitrates are one of the impurities of sewage(iv) Draining out sewage water is good method for cleaning the area

A

i, ii and iv only

B

ii, iii and iv only

C

i,ii and iii only

D

All are wrong

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NCERT TELUGU-WATER-EXERCISE
  1. Statement A: Chlorine kills harmful disease causing organisms present ...

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  2. Statement A: Nitrates, phosphates, metals etc. are examples for organi...

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  3. Which is true about the process Aeration ?(i) It is used for removal o...

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  4. Which of the following is not true about sewage(i) Sewage is more in r...

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  5. Purifying water by spraying it into sunlight to kill bacteria is calle...

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  6. A simple techinique that breaks down waste material and helps in the g...

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  7. The disease causing germs in waste water can be killed by using the ga...

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  8. International decade for action on Water for life' is

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  9. Available fresh water on land is of the total water

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  10. Oldest VanaSamrakshana Samithi in A.P. is

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  11. When do we celebrate World Water Day?

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  12. The waste water from the bathroom can be led intoto grow vegetables:

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  13. Biogas is produced by

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  14. Solids like faeces which settle at the bottom of a large tank during t...

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  15. This allows growth of microbes that breakdown wastes

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  16. Rearrange the following sentences in a correct order(i) A skimmer remo...

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  17. Fill in the Blanks and give reasons:Cleaning of water is a process of ...

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  18. Fill in the Blanks and give reasons:Waste water released by houses is ...

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  19. Fill in the Blanks and give reasons:Dried isused as a manure.

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  20. Fill in the Blanks and give reasons:Drains get blocked byand

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