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Hydrogen — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryHydrogen1 Mark
Question
Name one metal which liberates $\text{H}_2$ when treated with NaOH.
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Answer

Al (Aluminium) and Be (Beryllium)
$2\text{Al}+2\text{NaOH}+2\text{H}_2\text{O}\xrightarrow{\ \ \ \ }2\text{NaAlO}_2+\text{H}_2$
$\text{Be}+\text{2NaOH}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ }\text{Na}_2\text{BeO}_2+\text{H}_2$

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