In the balanced equation \(3\text{Fe} + x\,\text{H}_2\text{O} \rightarrow \text{Fe}_3\text{O}_4 + 4\text{H}_2\), the value of \(x\) is

A. 3

B. 2

C. 4

D. 8

Doubtly AI Asked 24 Oct 2026 AI-verified · Oct 2026 ssc 10th Save WhatsApp Report

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Best answer

Answer: C. 4

Oxygen balance: 4 oxygen atoms in \(\text{Fe}_3\text{O}_4\) need 4 \(\text{H}_2\text{O}\); hydrogen then gives \(4\text{H}_2\).

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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