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    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

    тАв Acid + Metal тЖТ Salt + Hydrogen Gas (HтВВ) тАв Example: 2HCl+ZnтЖТZnCl2+H2тЖС тАв Hence, the correct answer is Hydrogen (HтВВ) gas.

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