Sarath decided to paint his house.He added moderate quantity of calcium oxide to water in a plastic container.He observed that the container became warm, got curious and added more of CaO to water. What will be his observation?

The temperature of the container increases.

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The temperature of the container decreases.

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The water starts boiling after some time.

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The temperature of the container increases and the water starts boiling after sometime.

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Solution

The correct option is D
The temperature of the container increases and the water starts boiling after sometime.

When CaO is added to water an exothermic reaction takes place which rises the temperature of the container. Adding more CaO will generate more heat and as a result water will start boiling.

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