WasteWater story

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

1. Sewage is mainly a waste.

2. Sludge in separate tanks is decomposed to get by anaerobic bacteria.

3. In Sewarage manholes are located at every .

4. Chemicals like chlorine and ozone are used to water.

5. Drain constructed under the ground is called .

6. Compost pits are example of sewage.

7. The process of composting human excreta by earthworm is called .

8. Cleaning of waste water is known by the name of treatment.

9. Sludge and biogas are of waste water treatment plant.

10. Open drain system is a breeding place for .