Q1. Which one of the following iron ores is known as iron carbonate?
Explanation
Siderite is an iron carbonate ore, chemically represented as iron(II) carbonate. Haematite is mainly iron oxide and is one of the richest common iron ores, but it is not a carbonate. Magnetite is also an iron oxide, known for its magnetic property. Limonite is a hydrated iron oxide mixture rather than iron carbonate. Since the question specifically asks for the ore known as iron carbonate, Siderite alone fits the description.
