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Why do we magnesium ribbon with a sand -...

Why do we magnesium ribbon with a sand - paper before igniting ?

Text Solution

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To remove the layer of oxide and carbonate from the surface.
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Similar Questions

Explore conceptually related problems

While Abhi was about to burn magnesium ribbon in the chemistry laboratory, the teacher asked him to clean the ribbon with the sand paper before burning it. What could be the reason for the above instruction by the teacher? After burning the magnesium ribbon, Abhi obtained a white coloured residue. Name this residue. What type of chemical reaction has occurred? Write a balanced chemical equation to explain the reaction.

Why should a magnesium ribbon be cleaned before burning in air ?

Knowledge Check

  • Magnesium ribbon is rubbed with sand paper before making it to burn. The reason of rubbing the ribbon is to:

    A
    remove moisture condensed over the surface of ribbon.
    B
    generate heat due to exothermic reaction
    C
    remove magnesium oxide formed over the surface of magnesium
    D
    mix silicon from and paper (silicon dioxide) with magnesium for lowering ignition temperature of the ribbon

  • When magnesium ribbon burnt, it produces :

    A
    magnesium hydroxide
    B
    magnesium oxide
    C
    magnesium chloride
    D
    magnesium sulphate

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