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Question

How can quick lime be prepared from slaked lime?

A
By cooling slaked lime
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B
By heating slaked lime
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C
By adding water
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D
None of these
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Solution

The correct option is C By heating slaked lime
Calcium oxide or Quick lime can be obtained from slaked lime by heating slaked lime to above 500o C. Slaked lime them decomposes to give CaO. The balanced equation can be written as-
Ca(OH)2 = CaO + H2O

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