Final Assessment

Final Quiz

1. What is the main purpose of water treatment? Protect public health Increase colour Reduce monitoring

2. What does coagulation do? Destabilises fine particles Adds oxygen only Stores water

3. What is flocculation? Gentle mixing to build floc Rapid pumping Filter backwash

4. What does clarification mainly remove? Suspended solids Electricity Pipe pressure

5. What is backwashing used for? Cleaning filters Chlorinating tanks Testing pumps

6. What does turbidity measure? Cloudiness from particles Temperature only Pump speed

7. Why is disinfectant residual important? It provides continuing protection It increases hardness It measures pH

8. What can cavitation damage? Pumps Laboratory labels SCADA trends

9. Why calibrate dosing pumps? To verify actual chemical delivery To change pipe size To improve Wi-Fi

10. What should be checked when an analyser reading looks wrong? The process and the instrument Only the operator Only the weather

11. What is SCADA used for? Monitoring and control Chemical storage Laboratory sterilisation

12. Why are trends useful? They show changes over time They replace sampling They remove alarms

13. What should a shift handover include? Conditions, actions and unresolved issues Only staff names Only weather

14. Why remove sludge from clarifiers? To maintain settling performance To raise chlorine residual To increase filter media

15. What is a jar test used for? Comparing treatment conditions Testing pump bearings Measuring tank level

16. Why use multiple barriers? To reduce reliance on one process To increase paperwork To avoid maintenance

17. What should happen during unsafe chemical handling conditions? Stop and follow emergency procedures Continue quickly Ignore the leak

18. What is root cause analysis for? Preventing recurrence Changing labels Increasing flow automatically

19. What should operators do after making an adjustment? Record and review the effect Leave no note Change several other settings

20. What is the best first step in fault finding? Observe and define the problem Replace everything Silence all alarms