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Metal A displaces metal B, and metal B displaces metal C. Which metal is the least reactive?

Answer and explanation

Correct answer: Metal C

A metal can displace another metal from its compound only when it is more reactive. Since A displaces B, the order begins A > B. Since B displaces C, the order continues B > C. Combining both statements gives A > B > C in reactivity. Therefore C is the least reactive metal. Option D contradicts the displacement rule, while A and B are more reactive than C.

Related tags

ScienceClass10MetalsReactivity SeriesDisplacement OrderMetals And Non MetalsClass 10 Mcq

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