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Aluminium is a reactive metal but is sti...

Aluminium is a reactive metal but is still used for packing food articles. Why ?

Text Solution

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From the position of the aluminium (Al) metal in the activity series, it seems to be quite reactive. However, it is not so reactive. Actually, when the metal is kept air or oxygen for sometime, it is converted into its oxide called aluminium oxide `(Al_(2)O_(3))`. This gets deposited as the surface of the metal as a thin coating. It is rather passive which means that it is not reactive. Therefore, the metal is used for packing food articles which do not get spoiled under the foil.
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Knowledge Check

  • Aluminium is a type of metal that is used to make

    A
    wires and bulb filaments
    B
    tanks and magnets
    C
    drink cans, foil and aeroplanes
    D
    food containers and tooth fillings.

  • Name metal whose foils are used for the packing of food materials.

    A
    Silver
    B
    Copper
    C
    Aluminium
    D
    gold

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