Question : When quick lime is added to water
Option 1: Heat is liberated
Option 2: Heat is absorbed
Option 3: Temperature decreases
Option 4: No heat change takes place
Correct Answer: Heat is liberated
Solution : The correct answer is Heat is liberated.
Quick lime has a chemical formulae of CaO. It when reacts with water forms calcium hhydroxide, which has a chemical formula of Ca(OH)₂. It is an exothermic reaction i.e. large amount of heat is liberated in this reaction.
Quick lime is used in the manufacturing of steel and iron, bleaching powder, calcium carbide, in making of porcelain and glass etc.
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