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Question

Which of the following product is formed due to burning of a magnesium ribbon with a spirit lamp?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Magnesium oxide

Burning Magnesium Reaction

When a magnesium ribbon is burned in the presence of air using a heat source like a spirit lamp, it undergoes a combustion reaction.

Magnesium (Mg) reacts with oxygen (O2) present in the air.

The balanced chemical equation for this reaction is:

$ 2Mg_{(s)} + O_{2(g)} \rightarrow 2MgO_{(s)} $

The solid product formed is magnesium oxide (MgO).

Therefore, burning magnesium ribbon forms magnesium oxide.

Comparing this with the given options:

  • Magnesium sulphate (MgSO4)
  • Magnesium dioxide (This is not a stable compound formed under these conditions)
  • Magnesium oxide (MgO)
  • Magnesium hydroxide (Mg(OH)2)

The correct product is Magnesium oxide.

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Similar Questions

  1. Which chemical process results in the formation of plaque on copper, the rusting of iron and the blackening of silver?
  2. What is oxidization?
  3. With which substance does silver react and turn black?
  4. Which of the following determines that a chemical reaction has not taken place?
  5. Which of the following solutions has the highest concentration of hydrogen ions?
  6. Decomposition of calcium carbonate to calcium oxide and carbon dioxide on heating is an example of ____.
  7. ________ is not a chemical change.
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Important Questions from Chemical Reaction

  1. Which one of the following is not an example of a redox reaction?
  2. Which one of the following is not a pigment?
  3. Which one of the following reactions is an example of decomposition reaction?
  4. Match List I with List II and select the correct answer using the code given below the Lists:

    LIST I

    (Chemical process)

    LIST II

    (Reaction)

    A.

    Electrolysis of water

    1.

    Double displacement
    reaction

    B.

    Burning of coal

    2.

    Combination reaction

    C.

    Iron nail immersed in copper sulphate solution

    3.

    Decomposition reaction

    D.

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    4.

    Displacement reaction

  5. Consider the following reaction:

    Fe2O3(s) + 2Al(s) → 2Fe(s) + Al2O3(s)

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