Question

    Acid reacts with metal to form salt and liberates

    _________ gas.
    A Oxygen Correct Answer Incorrect Answer
    B Hydrogen Correct Answer Incorrect Answer
    C Carbon Dioxide Correct Answer Incorrect Answer
    D Nitrogen Correct Answer Incorrect Answer

    Solution

    • Acid + Metal → Salt + Hydrogen Gas (H₂) • Example: 2HCl+Zn→ZnCl2+H2↑ • Hence, the correct answer is Hydrogen (H₂) gas.

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