WAEC Chemistry 2025 Objective — Question 3
Question 3 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
Advertisement
Aluminium is extracted by
- A. electrolysis of the purified oreCorrect
- B. froth flotation of the smelted ore
- C. reduction of the ore with coke in a furnace
- D. roasting the ore in excess supply of air
Explanation
Aluminium is extracted from its ore, bauxite, by electrolysis (after purification by the Bayer process). The purified bauxite is dissolved in molten cryolite and then electrolyzed.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.