Cementite is________________?
Correct answer: D. All A., B. and C.
- A. Fe3C chemically
- B. A compound of carbon and iron
- C. Characterised by an orthorhombic crystal structure
- D. All A., B. and C.
Explanation
Cementite is iron carbide, Fe₃C, an iron-carbon compound with an orthorhombic crystal structure. Since all three statements describe it, the combined option is correct.
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