1.

In chromite ore, the oxidation number of iron and chromium are respectively.

Answer»

`+ 3, + 2`
`+3, +6`
`+2, + 6`
`+2, +3`

Solution :Chromite ore is `FeCr_(2)O_(4)`
Ox. STATE of `FE = + 2 , Cr=+ 3`


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