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The chemical formula of the rust is...

The chemical formula of the rust is 

A

`FeO.xH_2O`

B

Fe_3O_2.xH_2O`

C

`Fe_2O_3.xH_2O`

D

`FeO_2.xH_2O`

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CHETANA PUBLICATION-MODEL ACTIVITY SHEET-Exercise
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