Chapter-18 ➤ Wastewater Story

1. Treatment plants reduce pollutants in wastewater to a level where nature can take care of it.


2. We should not defecate in open because untreated human excreta is a health hazard.


3. Period 2005-2015 is being celebrated as the international decade for action on


4. Sewage is mainly a


5. Which one of the following is used in vermi-processing toilet?


6. In sewerage manholes are located at every


7. Poor sanitation and contaminated drinking water is the cause of a large number of diseases.


8. Which of the following is/are products of wastewater treatment?


9. Which one of the following is a quality of wastewater?


10. Cooking oil and fats should not be thrown down the drain because they can harden and block the pipes.


Question 1 of 10