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8th Class Science Materials : Metals and Non-metals Question Bank Metals and Non-metals

  • question_answer
    Each beaker contains two metal strips of same size fastened together and immersed in hydrochloric acid. After 5 minutes, which beaker will contain the least amount of zinc ions?

    A)    

    B)        

    C)                          

    D)  

    Correct Answer: A

    Solution :

    Magnesium is more reactive than zinc, so magnesium reacts with hydrochloric acid while zinc remains as it is. Zinc is more reactive than lead, iron and silver so, zinc reacts with hydrochloric acid to form\[\text{Z}{{\text{n}}^{\text{2+}}}\text{ions}\].


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