1) Which among the following is not is mineral of iron ? A) Haematite B) Magnesite C) Magnetite D) Siderite Answer: Option BExplanation:Haematite - Fe2O3 Magnesite -MgCO3 Magnetite-Fe3O4 Siderite - FeCO3 $\therefore$ Magnesite is the mineral of magnesium (Mg)
