The unbalanced equation — task. Chemistry CBSE Live product, Class 10 (2026-27).

Choose the best answer:

Which of the following equations is not balanced?

\(CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O\)
\(Fe + H_2O \rightarrow Fe_3O_4 + H_2\)
\(NaOH + HCl \rightarrow NaCl + H_2O\)
\(2Mg + O_2 \rightarrow 2MgO\)

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