Question 3
Name four stages in the purification of water at a water processing plant. [4 marks]
Observation
This question was attempted by many candidates and their performance was very poor. Candidates could not correctly name stages in the purification of water at a water processing plant.
The expected answers are as follows:
STAGES IN THE PURIFICATION OF WATER AT THE WATER PROCESSING PLANT
- pumping of water into a coarse grid
- filtration
- flocculation/coagulation
- chlorination
- sedimentation
- proper storage