When sealed biscuits are kept inside the refrigerator, they become crispy because the humidity inside the refrigerator is generally low, which helps absorb excess moisture from the biscuits. This drying effect restores their crispiness.
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During the winter season, we feel colder due to clear weather. Clear skies allow more heat to radiate away from the Earth’s surface into space, resulting in colder temperatures at ground level. This lack of cloud cover reduces the insulation ...
The latent heat of vaporization of water is 536 Cal/g. This value represents the amount of heat required to convert 1 gram of water at its boiling point into steam without a temperature change.
In an isothermal change, the temperature of the system remains unchanged. Heat can be exchanged with the surroundings to ensure the temperature remains constant while the system undergoes expansion or compression.