JAMB - Chemistry (1983 - No. 30)
Some metals are extracted from their ores after some preliminary treatments by electrolysis (L), some by thermal decomposition(T), some by a combination of both processes (TL). Which set-up in the following for the extraction of iron, copper, and aluminium is correct?
lron (L), copper (L) aluminium (T)
lron (T) copper (L) aluminium (T)
lron (TL) copper (TL) aluminium (TL)
Iron (L) copper (T) aluminium (T)
lron (T) copper (L), aluminium (TL)