Environmental Engineering Practice Test 7

1. The tolerance limit of pH value of sewage to be discharged into sea water is ____________

2. The expression of relative stability at 20^oC is given by ___________

3. __________ is used to cut the sewage into smaller parts.

4. The dilution factor is expressed by _____________

5. The uppermost zone in lakes is called as ____________

6. The test for finding the optimum coagulant dose in water is ____________

7. The head loss through the screen is given by HL = k* (Vt2 - Va2), where Vt and Va are velocities through and above the screen respectively. What is the value of constant k?

8. Solids are removed from the wastewater by which of the following unit operation?

9. The lakes are classified into how many types on the basis of productivity?

10. Which of the following process is used to remove the colloidal particles from the effluent?