Which of the following is not an example of acid neutralizing reaction?

M g O H + 2 H C l

\to

M g C l_{2} + H_{2} O

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H C l + N a O H

\to

N a C l + H_{2} O

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C a C O_{3} + 2 H C l \to C a C l_{2} + 2 H_{2} O + C O_{2}

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2 H N O_{3} + C a (O H)_{2} \to C a (N O_{3})_{2} + 2 H_{2} O

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Solution

The correct option is C $C a C O_{3} + 2 H C l \to C a C l_{2} + 2 H_{2} O + C O_{2}$
In case of neutralizing reactions.
Acid + Base $\to$ Salt + Water.
Example:
$M g O H + 2 H C l$ $\to$ $M g C l_{2} + H_{2} O$
$H C l + N a O H$ $\to$ $N a C l + H_{2} O$
$2 H N O_{3} + C a (O H)_{2} \to C a (N O_{3})_{2} + 2 H_{2} O$

But reaction between calcium carbonate and hydrochloric acid is a double decomposition reaction.

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Neutralization reaction is an example of ______ reaction.

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