Question

Element ______ (Fe/Zn/Cu) produces hydrogen by reacting with both acid as well as alkali.

Answer 1

Element Zn produces hydrogen by reacting with both acid as well as alkali.

Explanation:

Zinc (\(\text{Zn}\)) is an amphoteric metal, meaning it can react with both acids (like \(\text{HCl}\)) and strong alkalis (like \(\text{NaOH}\)) to liberate hydrogen gas. In contrast, iron (\(\text{Fe}\)) and copper (Cu) do not possess this amphoteric nature and cannot react with alkalis to produce hydrogen.