JEE Main 2019 — Chemistry solution

JEE Main2019Chemistry

The metal that gives hydrogen gas upon treatment with both acid as well as base is :

Solution

$Zn + NaOH \to N a_{2} Zn O_{2} + H_{2}$

$Zn + H_{2} S O_{4} \to ZnS O_{4} + H_{2}$

$Zn is amphoteric .$

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