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(a) How will you prepare Ca(OH)2 and CaCO3 from quicklime.

(b) Give any two uses of quick lime.

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(a) By adding water to quick lime we can prepare Ca(OH)2 . This process is called slaking. 

CaO + H2O → Ca(OH)2 

When CO2 is passed through lime water we can prepare CaCO3 .

Ca(OH) + CO → CaCO + H O

(b) 1. As an important primary material for manufacturing cement. 

2. In the manufacture of Na2CO3 from NaOH.

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