Which of the following compound releases a gas on the addition of dilute acid?

N_{2}

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K I

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C {C l}_{4}

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A g N O_{3}

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C a C O_{3}

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Solution

The correct option is C $C a C O_{3}$
$C a C O_{3}$ releases a $C O_{2}$ gas on the addition of dilute acid.
$2 H C l (a q) + C a C O_{3} (s) \to C a C l_{2} (a q) + C O_{2} (g) + H_{2} O (l)$

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