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प्रश्न
The metal that gives hydrogen gas upon treatment with both acid as well as base is ______.
विकल्प
magnesium
mercury
zinc
iron
MCQ
रिक्त स्थान भरें
उत्तर
The metal that gives hydrogen gas upon treatment with both acid as well as base is zinc.
Explanation:
\[\ce{Zn + 2NaOH -> Na2ZnO2 + H2}\]
\[\ce{Zn + H2SO4 -> ZnSO4 + H2}\]
Zn is an amphoteric element.
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