Which of the following releases a gas with the addition of dilute acid?

N_{2}

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K l

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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 E $C a C O_{3}$
$C a C O_{3} + 2 H C l \to C a C l_{2} + H_{2} O + C O_{2} ↑$
Thus, calcium carbonate reacts with $H C l$ to form carbon dioxide gas.

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