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Which of the following compounds is metallic and ferromagnetic? (a) CrO2 (b) VO2 (c) MnO2 (d)TiO2

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Which of the following compounds is metallic and ferromagnetic?

(a) CrO2 (b) VO2  (c) MnO2  (d)TiO2

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Correct option (a) CrO2

Explanation:

Only three elements iron (Fe), cobalt (Co) and nickel (Ni) show ferromagnetism at room temperature. CrO2 is also a metallic and ferromagnetic compound which is used to make magnetic tapes for Cassette recorders.

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