Question

why aluminium foils are used for covering cooked food through aluminium in a highly reactive metal ?
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Answer 1

$Aluminium is quite reactive, when it is kept in air or oxygen for some time, the upper surface get \\ converted into its oxide called aluminium oxide (Al2O3), which gets deposited as a thin coating on \\ the surface of the metal. ... Therefore, this metal is used for packing food articles which do not get \\ spoiled in the foil$

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