1.

Identify the metal that reacts with concetrated H_(2)SO_(4)orHNO_(3), but not with concentrated HCl.

Answer»

Fe
Zn
Cu
Al

Solution :Copper being less active metal, does not react with HCl. But `H_(2)SO_(4)andHNO_(3)` being STRONG oxidizing AGENTS oxideze copper, releasing `SO_(2)` GAS or `NO_(2)` gas.


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