Oxides and hydroxides of which element gives the reddish brown colour to the soil?

Calcium

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Lead

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Iron

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Magnesium

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Solution

The correct option is C Iron
The typical colours associated with iron oxides include black, yellow, red and brown. Hematite, the mineral form of ferric oxide (Fe2O3) is known to have a brown to reddish brown colour.Iron (III) hydroxide (Fe(OH)3) is precipitated out of solution as a rust-brown gelatinous solid.

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