WAEC Chemistry 2014 Theory — Question 20
Question 20 of 38 from the West African Examinations Council (WAEC) Chemistry 2014 Theory paper, with the correct answer and a full explanation.
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3(a)(i). Outline the steps involved in the purification of water for town supply.
Model answer
(i) Screening (ii) Aeration (iii) Coagulation (iv) Filtration (v) Hardness removal (vi) Chlorination
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