Select the correct statements about CaO.

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Its aqueous solution can absorb CO2

It is used as refractory

It can remove temporary hardness

AII of the above are correct statements

answer is D.

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Detailed Solution

(1) Ca(OH)2+CO2⟶CaCO3+H2O− (Correct) (2) Correct(3) CaO+CaHCO32⟶2CaCO3+H2O−( Correct )

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