Question

One day you were boiling water for making tea, you observed that at a certain point, the temperature of the solution became constant. Identify a correct reason.

• A. All the heat passed to the water was getting used to change the state.
• B. At that point, water started boiling.
• C. Changing state of matter requires energy.
• D. All the options are correct.

Answer 1

The correct option is D

All the options are correct.

The temperature of water rises due to the passage of heat, but at boiling temperature water starts converting into steam by absorbing the heat energy. Hence, the heat is used in this conversion and temperature becomes constant.