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How many metallic ores are concentrated ...

How many metallic ores are concentrated by magnetic separation method from the given ores ?
Cassiterite, pyrolusite, rutile,magnetite, galena, cinnabar.

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Verified by Experts

The correct Answer is:
`(4)`
Cassiterite `(SnO_(2))`, rutile `(TiO_(2))`,
magnetic `(Fe_(3)O_(4))`, cinnabar `(PbS)`.
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