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The Oxide of a metal (R) can be reduced by the metal (p) while metal (R) can reduce the oxide of metal (Q) Here the decreasing order of the reactivity of metal (P) and (Q) and (R) with oxygen

$ (a)\;P > R > Q \\(b)\;Q > P > R \\(c)\;P > Q > R \\ (d)\;R > P > Q $
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$P > Q > R$ is correct
Hence c is the correct answer.
answered Mar 17, 2014 by meena.p

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