Environmental Engineering Practice Test 6

1. Which sewer appurtenance is used for removing rainwater from the roads?

2. Which of the following method is not used for treating crown corrosion?

3. The cement concrete sewers are lined with vitrified clay lining to prevent __________

4. _______ condition exists when the sewer is laid at a depth between 9m to 12m.

5. Which of the following is an end product formed from both the aerobic and anaerobic decomposition of organic matter?

6. Which device is used to prevent the clogging of sewer pipes?

7. ________ removes oil and grease from the sewage.

8. ________ is used to find the D.O content of sewage.

9. The maximum quantity of dissolved oxygen present in wastewater is called __________

10. Which sewer is also called as submain sewer?