Quicklime (CaO - Calcium Oxide) reaction with water is regarded as exothermic. A student mixes these two products in a test tube and touches its side surface. Which of the following statement correctly describes the student's observation?

The test tube becomes cold due to the release of heat energy.

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The test tube becomes hot due to the release of heat energy.

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The test tube becomes hot due to absorption of heat energy.

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The test tube becomes cold due to absorption of heat energy.

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Solution

The correct option is B
The test tube becomes hot due to the release of heat energy.

The test tube becomes hot due to the release of heat energy.

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Quicklime (CaO - Calcium Oxide) reaction with water is regarded as exothermic. A student mixes these two products in a test tube and touches its side surface. Which of the following statement correctly describes the student's observation?

The correct option is B The test tube becomes hot due to the release of heat energy. The test tube becomes hot due to the release of heat energy.

The correct option is B
The test tube becomes hot due to the release of heat energy.

The test tube becomes hot due to the release of heat energy.