Class JEE Mathematics Practice Q #713
KNOWLEDGE BASED
REMEMBER
4 Marks 2022 MCQ MULTI
Which of the following ores contain Iron?
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Correct Answer: Haematite, Magnetite
Explanation
Haematite is Fe2O3 and Magnetite is Fe3O4. Bauxite is Al, Malachite is Cu.

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Step-by-Step Solution

To answer the question, one needs to know the chemical formulas of the common ores. Ores containing Iron:
  • Hematite (Fe2O3)
  • Magnetite (Fe3O4)
  • Iron Pyrites (FeS2)
  • Siderite (FeCO3)

Correct Answer: Hematite, Magnetite, Iron Pyrites, Siderite

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Pedagogical Audit
Bloom's Analysis: This is an REMEMBER question because it requires recalling the composition of different ores.
Knowledge Dimension: FACTUAL
Justification: The question directly tests the recall of specific facts about the composition of ores.
Syllabus Audit: In the context of JEE, this is classified as KNOWLEDGE. It directly assesses knowledge of ore composition, a factual recall question.

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