Carbon dioxide, dissolved in water, can dissolve rocks containing calcium carbonate and magnesium carbonate. What are the respective salts formed?

Nuclear

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Hydrogen

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CNG

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Kerosene

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Solution

The correct option is C
CNG

The salts formed are calcium bicarbonate and magnesium bicarbonate respectively. These dissolved salts give taste to natural water. Furthermore, they satisfy the needs of plants for growth as calcium and magnesium ions are needed by the plants.

Calcium carbonate + Water + Carbon dioxide $\to$ Calcium bicarbonate

Magnesium carbonate + Water + Carbon dioxide $\to$ Magnesium bicarbonate

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