WAEC Physics 2017 Objective — Question 47
Question 47 of 50 from the West African Examinations Council (WAEC) Physics 2017 Objective paper, with the correct answer and a full explanation.
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Oxidation of the filament in a light bulb is prevented by the introduction of
- A. A. hydrogen
- B. B. oxygen
- C. C. argonCorrect
- D. D. mercury vapour
Explanation
Argon or nitrogen is used to prevent the oxidation of the filament in light bulbs.
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