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

  • question_answer
    Read the following statements carefully and identify X, Y and Z respectively.
    (i)  X is stored under kerosene.
    (ii) Y catches fire on exposure and stored in water.
    (iii) Z reacts with steam.

    A)  Na, Mg, Cu                

    B)  Na, P, Fe       

    C)  Cu, Zn, K                   

    D)  Zn, Cu, Na

    Correct Answer: B

    Solution :

    Sodium reacts vigorously with oxygen and water, giving off a lot of heat so, it is stored in kerosene. Phosphorus catches fire on exposure to air and hence, stored in water. Iron reacts with steam.


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