Question

Which of the following ores are currently matched with their formula?
(I) $\text{Magnetite}\to F{e}_3{O}_4$
(II) $\text{Haematite}\to FeC{O}_3$
(III) $\text{Siderite}\to F{e}_2{O}_3$
(IV) $\text{Limonite}\to F{e}_2{O}_3.3H_{2}O$

• A. I, IV
• B. II, III
• C. I, III
• D. II, IV

Answer 1

The correct option is A I, IV

$\text{Magnetite}\to F{e}_3{O}_4$
$Haematite\to F{e}_2{O}_3$
$Siderite\to FeC{O}_3$
$\text{Limonite}\to F{e}_2{O}_3.3H_{2}O$