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Q.

Which of the following compounds is metallic and ferromagnetic

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a

MnO2

b

TiO2

c

VO2

d

CrO2

answer is C.

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Detailed Solution

Given data : It is given to identify  which of the following compounds is metallic and ferromagnetic, among the given option. 

Explanation :

There are only three elements of iron. At room temperature, Fe, Co, and Ni exhibit ferromagnetism. CrO2 is a metallic and ferromagnetic compound used in producing magnetic tapes for cassette recorders.

Hence, the correct option (C). CrO2.

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