Starting from the best quality of iron ore, which one of the following is the correct sequence of the iron ore based on the contents of pure iron?

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Q: 26 (NDA-II/2008)
Starting from the best quality of iron ore, which one of the following is the correct sequence of the iron ore based on the contents of pure iron?
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question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,16,37,16,24,7,6

keywords: 

{'iron ore': [4, 0, 2, 5], 'pure iron': [0, 0, 1, 1], 'magnetite': [0, 0, 1, 0], 'hematite': [0, 0, 1, 0], 'limonite': [0, 0, 2, 1], 'siderite': [0, 0, 1, 0], 'contents': [0, 0, 2, 0]}