One day you were boiling water for making tea, you observed that at certain point, temperature became constant. It is because

All the heat passed to the water was getting used to change the state.

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At that point, water started boiling.

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Changing state of matter requires energy.

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All the options are correct.

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Solution

The correct option is D
All the options are correct.

Temperature of water rises due to passage of heat, but at boiling temperature water starts converting into steam. Hence the heat is used in this conversion so temperature becomes constant.

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One day you were boiling water for making tea, you observed that at certain point, temperature became constant. It is because

The correct option is D All the options are correct. Temperature of water rises due to passage of heat, but at boiling temperature water starts converting into steam. Hence the heat is used in this conversion so temperature becomes constant.

The correct option is D
All the options are correct.

Temperature of water rises due to passage of heat, but at boiling temperature water starts converting into steam. Hence the heat is used in this conversion so temperature becomes constant.