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Question

When an iron nail is dipped into a copper sulphate solution, which substance gets displaced?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Copper

When an iron nail is dipped into a copper sulphate solution, a chemical reaction occurs where iron displaces copper from the solution. This is due to iron being more reactive than copper, and it's a classic example of a displacement reaction.

The reaction can be written as:

Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s)

In this reaction, the iron (Fe) displaces the copper (Cu) due to its higher reactivity, forming iron sulphate (FeSO4) and elemental copper (Cu). Therefore, the substance that gets displaced is copper.

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Similar Questions

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  2. Select the correct balanced equation option for the reaction Fe + H2o → Fe3o4 + H2 .

  3. Which of the following statemnets is INCORRECT about sodium carbonate?

  4. Which of the following is obtained upon heating ferrous sulphate?

  5. What compound is formed when dilute hydrochloric acid is added to a beaker containing a small amount of copper oxide?

  6. How many water molecules are required to react with three molecules of the iron atom to form Fe3O4?

  7. If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?
  8. Which of the following is NOT an example of combination reaction?
  9. Consider the following chemical reactions:
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Important Questions from Chemical Reaction

  1. Which of the following statement is/are true?

    I. In physical change new substance is formed. substance is formed.

    II. In chemical change no new substance is formed.

  2. Which of the following cells involves similar chemical reactions?

  3. The information not obtained from balanced chemical equation is

  4. Oxygen cannot be obtained by which one of the following methods?

  5. Which is the most reactive metal?

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