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Question

Which of the following reaction is double displacement reaction?


Correct Answer
A
FeCl3+3NaOHFe(OH)3+3NaCl
Your Answer
B
Zn+H2SO4ZnSO4+H2
Your Answer
C
2CO+O22CO2
Your Answer
D
N2+O22NO

Solution

The correct option is A FeCl3+3NaOHFe(OH)3+3NaCl
A double displacement reaction involves exchange of ions between the reactants in order to form the products.

In the reaction between ferric chloride and sodium hydroxide, there is exchange of Cl and OH ions between the reactants to form ferric hydroxide and sodium chloride. So, it is a double displacement reaction.

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