The emitted or absorbed heat which changes the state of the substance but does not cause any change in temperature is called latent heat. This energy is used for phase transitions, such as melting or boiling, without altering the substance’s ...
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Water on mountains starts boiling at a temperature less than 100°C due to the lower atmospheric pressure at higher altitudes. The reduced pressure decreases the boiling point of water, causing it to boil at temperatures below 100°C.
Due to impurities, the boiling point (B.P) of a liquid increases. This phenomenon is known as boiling point elevation and is a colligative property. The presence of impurities lowers the vapor pressure of the solution, requiring a higher temperature for ...
Running a fan in hot weather gives comfort because our sweat evaporates faster. The moving air increases the evaporation rate of sweat from our skin, which cools the body through the process of evaporative cooling.
The temperature of the Sun’s surface is approximately 6000K. This value refers to the photosphere, the Sun’s outer layer that emits the light we see.