When quicklime dissolves in water?

A. heat is absorbed
B. heat is evolved
C. oxygen is liberated
D. hydrogen is given off

Correct Answer:

Option B – heat is evolved

Explanation

– When quicklime is added to water, it forms slaked lime along with the evolution of heat. There will be a rise in the temperature of the bucket. Calcium oxide reacts with water to form calcium hydroxide, also called slaked lime.

– That is adding water to quicklime produces an exothermic reaction (gives out heat) and hydrated lime.