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CaO(s) + H2O -> Ca(OH)^2 -where this chemical reaction occur?

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CaO(s) + H2O -> Ca(OH)^2  -where this chemical reaction occur?

(a) Calcination limestone

(b) Portland cement production

(c) Cement rock beneficiation

(d) Hydrated lime

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I'd like to ask this question from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology

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Correct option is (d) Hydrated lime

Easiest explanation: In hydrated lime process, quicklime reacts with water and the product from this complete reaction is light, dry slaked lime which is classified by screen or air separators to remove any overburned lime that did not hydrated.

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