Chemistry-6-Minerals and Ores

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1.
Which iron ore contains the highest percentage of iron content?
2.
Which of the following is not a non-metallic mineral?
3.
Which among the following types of glasses contains Cerium and other rare earths and has a high absorption of ultraviolet rays?
4.
Calamine is an ore of which among the following?
5.
Carnotite is a mineral of which among the following metals?
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