Health Education Paper 2 Nov/Dec 2015

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 

  1. pumping of water into a coarse grid
  2. filtration
  3. flocculation/coagulation
  4. chlorination
  5. sedimentation
  6. proper storage