JAMB Chemistry 2010 Objective — Question 24

Question 24 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2010 Objective paper, with the correct answer and a full explanation.

24. Iron can be protected from corrosion by coating the surface with A. copper B. zinc C. gold D. silver

A. copper
B. zincCorrect
C. gold
D. silver

Explanation

Zinc is higher than iron in the reactivity series; therefore it is used to galvanize (protect) iron. Copper, gold and silver are inappropriate as they are lower than iron in the series.

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