Which of the following is an example displacement reaction?

{CaCO}_{3} (s)

Heat - - \to

CaO(s)

{CO}_{2(g)}

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2Mg(s)

O_{2} (g)

\to

2MgO(s)

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Fe(s)

{CuSO}_{4} (aq)

\to

{FeSO}_{4} (aq)

Cu(s)

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N_{2} (g) + H_{2} (g) \to {2NH}_{3} (g)

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Solution

The correct option is C $Fe(s)$ + ${CuSO}_{4} (aq)$ $\to$ ${FeSO}_{4} (aq)$ + $Cu(s)$
The reaction in which a more reactive element displaces a less reactive element from its compound or salt solution is called a displacement reaction.
Among the given options only in the reaction between iron and copper sulphate, iron $(Fe)$ being more reactive displaces copper $(Cu)$ from its solution.

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Similar questions

Which of the following reactions will not occur ? Why not?
(a) $M g S O_{4} (a q) + C u (s) ⟶ C u S O_{4} (a q) + M g (s)$
(b) $C u S O_{4} (a q) + F e (s) ⟶ F e S O_{4} (a q) + C u (s)$
(c) $M g S O_{4} (a q) + F e (s) ⟶ F e S O_{4} (a q) + M g (s)$

Q. Match the following:

Column A Types of chemical reaction	Column B Chemical equations
(a) Combination reaction	(i) $C a C O_{3} A \to C a O + C O_{2}$
(b) Decomposition reaction	(ii) $2 H_{2} O E l e c t r i c i t y - ----- \to 2 H_{2} + O_{2}$
(c) Displacement reaction	(iii) $C a O + C O_{2} \to C a C O_{3}$
(d) Analysis reaction	(iv) $F e (s) + C u S O_{4} (a q .) \to F e S O_{4} (a q) + C u (s)$

Identify the type of reaction in the following examples :
(i) $N a_{2} S O_{4} (a q) + B a C l_{2} (a q) \to B a S O_{4} (s) + 2 N a C l (a q)$
(ii) $F e (s) + C u S O_{4} (a q) \to F e S O_{4} (a q) + C u (s)$
(iii) $2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (l)$

Q. State, giving reasons, which of the following reactions will occur and which will not:
(a) MgSO₄ (aq) + Cu(s) → CuSO₄ (aq) + Mg(s)
(b) CuSO₄ (aq) + Fe (s) → FeSO₄(aq) + Cu(s)
(c) MgSO₄ (aq) + Fe (s) → FeSO₄ (aq) + Mg(s)

Q. State which of the following chemical reactions will take place or not, giving suitable reason for each:

(a) Z n_{(s)} + C u S o_{4 (a q)} \to Z n S O_{4 (a q)} + C u_{(s)}

(b) F e_{(s)} + Z n S O_{4 (a q)} \to F e S O_{4 (a q)} + Z n_{(s)}

(c) Z n_{(s)} + F e S O_{4 (a q)} \to Z n S O_{4 (a q)} + F e_{(s)}

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