passwella.
Menu

JAMB Chemistry 1999 Question 39

Question 39

Metals and their Compounds

The pair of metals in the reactivity series that are usually extracted by the electrolysis of their ores is

  1. A.magnesium and zinc
  2. B.magnesium and calcium
  3. C.copper and zinc
  4. D.lead and calcium.
Show the answer and explanation

Answer: B (magnesium and calcium)

Explanation

Very reactive metals near the top of the series, such as calcium and magnesium, cannot be reduced by carbon and are extracted by electrolysis of their molten compounds.