NMMS Rajasthan Science 2021 Practice Question

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NMMS Rajasthan - Questions - Science - PYQ - 2021 - 85

Home Practice Question 975

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NMMS Rajasthan · SAT · 2021 . PYQ

Chemical formula of rust is -

Explanation

Rust forms when iron reacts with oxygen and moisture in the air, producing hydrated iron(III) oxide, whose basic chemical formula is written as Fe2O3. 'Fe' alone is just plain iron metal, not rust. So the correct answer is Fe2O3, option (1).

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Re-check your working by substituting the answer back into the original question.

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