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RRB Group-D Model Paper 17 with answers for online practice
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© examsnet.com
Question : 48
Total: 100
Which of the following is an ore of Iron?
Siderite
Malachite
Bauxite
Anglesite
Validate
Solution:
Naturally occurring mineral from which a metal can be extracted is called an ore.
The impurities present in an ore is called gangue.
Iron ores are the minerals from which metallic iron is extracted.
Among the options, only siderite is an ore of Iron.
The chemical formula of siderite is FeCO3
.
Siderite consist of 48.2% of iron.
The other important ores of iron are:
Magnetite.
Hematite
Goethite.
Limonite.
Malachite is an ore of Copper.
Bauxite is an ore of Aluminium.
Anglesite is a minor ore of lead
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