MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the chemical formula of cementite? |
| A. | Fe<sub>3</sub>O<sub>4</sub> |
| B. | Fe<sub>2</sub>O<sub>3</sub> |
| C. | Fe<sub>3</sub>C |
| D. | FeSO<sub>4</sub> |
| Answer» D. FeSO<sub>4</sub> | |