Multiple choice

One of the types of sewage disposal is septic tanks. Where can it be used?

  1. In hospitals

  2. In railway stations

  3. In schools

  4. Where there is no sewage system

  5. In flats and apartments
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct. Septic tanks are used where there is no sewerage system and sanitation has to be maintained. It is a big tight box usually buried underground.

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