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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 ?

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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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DINESH PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS -Short Answer Questions
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  4. Give one example each of : (i) Thermal decomposition reaction (ii)...

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  7. What is an oxidation reaction (i) the substance oxidised and (ii) the ...

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  8. Identify the type of reaction in the following examples : (i) Na(2)S...

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  9. Solid calcium oxide was taken in a container and water was added slowl...

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  11. (i) What is observed when a solution of potassium iodide to a solution...

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  12. What change in colour is observed when white silver chloride is left e...

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  13. (a) What happens when an aqueous solution of sodium sulphate reacts wi...

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  15. "Barium chloride reacts with aluminium sulphate to give aluminium chlo...

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  16. Why do we store silver chloride in dark coloured bottles?

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  17. Design an activity to show a decomposition reaction in which light is ...

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  18. A solution of potassium chloride when mixed with silver nitrate soluti...

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  19. A White salt upon heating decomposes to give brown fumes and a residue...

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  20. Name the type of chemical reaction represented by the following equati...

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