Which of the following substance is an ore of iron?
...Which of the following substance is an ore of iron?
Bauxite
Cassiterite
Haematite
Steel
Correct answer is C
No explanation has been provided for this answer.
An atom of element X has an electronic configuration of 1s22S22p63s23p3. In which group o...
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The most common process in the extraction of metals from their ore is ...