Q. Which one of the following is not a Ferrous mineral?
Answer: Tungsten
Notes: Ferrous minerals contain iron, non-ferrous minerals do not contain iron. Iron ore and manganese are two important ferrous minerals. Chromite is also a ferrous mineral; its chemical name is Iron Chromium Oxide, with the chemical formula FeCr2O4. The non-ferrous metallic minerals include the ores of copper, lead and zinc, tin, graphite, tungsten, mercury, etc.

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