Jee Main
Some Basic Concepts Of Chemistry
JEE Main 2026 (Online) 6th April Morning Shift
MCQ+4 / -12026
An oxide of iron contains $69.9 \%$ iron, its empirical formula, is :
(Given : Molar mass of Fe and O are 56 and $16 \mathrm{~g} \mathrm{~mol}^{-1}$ respectively.)