Question

Many grain products, including cereals and others that identify themselves as a 'source of iron'. List something called "reduced iron" among the ingredients.
To which of the following would the term "reduced iron" most likely be referring?

• A. Compounds containing iron(III) ions.
• B. Compounds containing iron(II) ions.
• C. Iron metal.
• D. Oxides of iron.

Answer 1

Answer: (B)

Compounds containing iron(II) ions.

Iron can form $two$ ions $F{e}^{2+}$ and $F{e}^{3+}$. Reduced form refers to the ion which has the lowest oxidation no.

$\therefore$ $F{e}^{2+}⟶\text{Reduced form}F{e}^{3+}⟶\text{Oxidized form.}$

Option B is correct.