The given reaction is:
$$ ext{CaO} + ext{H}_2 ext{O} ightarrow ext{Ca(OH)}_2 $$
This reaction is called ____.

Question

The given reaction is:  
$$ 	ext{CaO} + 	ext{H}_2	ext{O} ightarrow 	ext{Ca(OH)}_2 $$  
This reaction is called ____.

Accepted Answer

A **Combination Reaction** is a type of chemical reaction where two or more reactants combine to form a single product. The general form of this reaction is:  
$$ 	ext{A} + 	ext{B} ightarrow 	ext{AB}. $$

In the given reaction:  
$$ 	ext{CaO} + 	ext{H}_2	ext{O} ightarrow 	ext{Ca(OH)}_2 $$,  
Calcium oxide (CaO) reacts with water (H₂O) to form calcium hydroxide (Ca(OH)₂), which is a single new compound. This fits the definition of a combination reaction.

Thus, the correct answer is **(c) Combination Reaction**.

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