JEE Main 2026 · Session 2 · Shift 1 · Chemistry
Question 51
The mass of iron converted into Fe₃O₄ by the action of 18 g of steam is: (Given: Molar mass of H, O and Fe are 1, 16 and 56 g mol⁻¹ respectively) Assume iron is present in excess:
- A. 2.1 g
- B. 4.2 g
- C. 21 g
- D. 42 gCorrect answer
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Official source
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Question paper, page 20.