WAEC Chemistry 2019 Objective — Question 38
Question 38 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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Biotechnology is applied in the
- A. treatment of sewageCorrect
- B. treatment of water
- C. purification of chemicals
- D. purification of metals
Explanation
Biotechnology (using micro-organisms) is widely applied in the biological treatment of sewage.
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