STANDARD Chemistry Reactivity of Metals MCQ Question
Zn gives hydrogen with H₂SO₄ and HCl but not with HNO₃ because
Zn acts as oxidising agent when reacts with HNO₃
HNO₃ is weaker acid than H₂SO₄ and HCl
Zn is above the hydrogen in electrochemical series
NO₃⁻ is reduced in preference to H⁺ ion.
Correct Answer
Detailed Explanation
Due to reduction of NO₃⁻ in preference to H⁺ ion. H⁺ ion is not reduced to give H₂ gas.
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