Which of these is arranged in the order of increasing reactivity ?
a) Copper ,Zinc , Iron
b)Iron, Zinc, Copper
c) Copper, Iron ,Zinc
d) Zinc, Iron, Copper
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Answer: c) Copper, Iron ,Zinc
Explanation: Copper is the least reactive
Fe (iron) is about in the middle of the activity series of metals.
Zinc fairly reactive metal that will combine with oxygen and other non-metals.
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