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Standard XII

Chemistry

Carbon Dioxide

The compound ...

Question

The compound X on heating gives a colourless gas . The residue is dissolved in water to obtain Y. Excess CO₂ is bubbled through aqueous solution of Y,Z is formed . Z on gentle heating gives back X. The compound X is:

CaCO₃

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Na₂CO₃

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CaSO₄.2H₂0

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K₂CO₃

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Solution

The correct option is A
CaCO₃

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The compound X on heating gives a colourless gas . The residue is dissolved in water to obtain Y. Excess CO2 is bubbled through aqueous solution of Y,Z is formed . Z on gentle heating gives back X. The compound X is:

The correct option is A CaCO3

The compound X on heating gives a colourless gas . The residue is dissolved in water to obtain Y. Excess CO₂ is bubbled through aqueous solution of Y,Z is formed . Z on gentle heating gives back X. The compound X is:

The correct option is A
CaCO₃