Which of the following is an example of double displacement reaction?

N₂ + 3 H₂ → 2 NH₃

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Mg + 2 HCl → MgCl₂ + H₂

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Na₂SO₄+ BaCl₂ → 2 NaCl + BaSO₄

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4 Na + O₂ → 2 Na₂O

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Solution

The correct option is C
Na₂SO₄+ BaCl₂ → 2 NaCl + BaSO₄

Sodium sulphate and barium chloride have exchanged their ions. Therefore, it is a double displacement reaction.

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Similar questions

Q. Which of the following reactions is/are a double displacement reaction(s) ?
(i)

A g N O_{3} + N a B r \to N a N O_{3} + A g B r

(ii)

B a C l_{2} + H_{2} S O_{4} \to B a S O_{4} + 2 H C l

(iii)

A g N O_{3} + N a C l \to A g C l + N a N O_{3}

(iv)

N a O H + H C l \to N a C l + H_{2} O

Which of the following is an example of double displacement reaction?
(i) $C O_{2} (g) + H_{2} (g) \to C O (g) + H_{2} O (g)$
(ii) $P_{4} O_{10} (s) + 6 H_{2} O (l) \to 4 H_{3} P O_{4} (a q)$
(iii) $H_{2} + O_{2} \to H_{2} O$
(iv) $C o C l_{2} (a q) + N a_{2} C O_{3} (a q) \to C o C O_{3} (a q) + 2 N a C l (a q)$