Question

Choose the correct option to complete the following equation.
Magnesium + Cold water $\to$ ____

• A. Rust
• B. Magnesium hydroxide
• C. Magnesium oxide
• D. No reaction

Answer 1

The correct option is D

No reaction

Magnesium is less reactive in nature. It does not react with cold water. It reacts with steam to form magnesium oxide and hydrogen gas. The reaction involved is:

${\text{Mg(s) + H}}_2\text{O(g)}\to {\text{MgO(s) + H}}_2\text{(g)}$