Identify the type of reaction on the basis of heat of the reaction.
$C a O + H_{2} O \to C a {(O H)}_{2} + △$

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Solution

$C a O + H_{2} O \to C a {(O H)}_{2} + △$
Calcium oxide reacts with water to form slaked lime, $C a (O H)_{2}$ . Heat is evolved during the reaction. Hence, this is a highly exothermic reaction.

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