To get her house whitewashed, an officer bought 10 kg of quicklime from the market and dissolved in 30 litres of water.
She noticed that the water started boiling even when it was not being heated.
Choose the corresponding product formed and the type of reaction involved.

Product formed:- Limestone
Type of reaction:- Endothermic

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Product formed:- Limewater
Type of reaction:- Endothermic

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Product formed:- Slaked lime
Type of reaction:- Exothermic

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Product formed:- Limestone
Type of reaction:- Exothermic

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Solution

The correct option is C Product formed:- Slaked lime
Type of reaction:- Exothermic
The reaction of quicklime with water is highly exothermic. Hence, the solution started boiling although it was not being heated.
Calcium oxide commonly known as quicklime dissolves in water to form slaked lime ${Ca(OH)}_{2}$ . The reaction occurs as follows: $CaO(s) + H_{2} O(g) \to {Ca(OH)}_{2} (aq) + heat$

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To get her house whitewashed, an officer bought 10 kg of quicklime from the market and dissolved in 30 litres of water. She noticed that the water started boiling even when it was not being heated. Choose the corresponding product formed and the type of reaction involved.

To get her house whitewashed, an officer bought 10 kg of quicklime from the market and dissolved in 30 litres of water.
She noticed that the water started boiling even when it was not being heated.
Choose the corresponding product formed and the type of reaction involved.