Question

reaction of calcim with water is known which reaction
a:decomposition b:combination c: displacement c:double displacement

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Answer 1

Answer:

Displacement reaction is the answer.

Althouɡh it is quite exothermic.

Explanation:

as, calcium displaces some amount of hydrogen from water, thus its a displacement or single displacement reaction

Ca+2H₂O→Ca(OH)₂+H₂↑+∆H

When Calcium oxide reacts with water, its a combination reaction.

CaO+H₂O→Ca(OH)₂+∆H