Which of the following reactions is a neutralisation reaction?
A. 4 Na + O2 ---> 2 Na2O
B. Fe + 2 HCl ---> FeCl2 + H2
C. MgO + H2O ---> Mg(OH)2
D. HNO3 + NaOH ---> NaNO3 + H2O
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3
Option no. D is correct answer
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`D´ is a neutralization reaction.
The reaction in which acid reacts with a base to form salt and water is called a neutralization reaction.
In option D, acid (HNO₃) reacts with base (NaOH) to form a salt (NaNO₃) and water (H₂O).
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