Question

During winter season condensed oil bottles are kept near the hearth flame or in the sunlight why?

Answer 1

During winter season, the oil gets condensed or solidified inside the bottle it is kept. This is because of low temperature in the surroundings. This makes it impossible to use the oil. To get it back to its natural liquid form, the surrounding temperature must be increased so that the heat loosens the solid. In order to get this heat, the condensed oil bottle is kept in the sunlight or near the hearth flame. This will automatically get the oil back to its original form.

Answer 2

Condensed oil bottles are kept near the hearth flame or in sunlight during the winter season in order to regain their liquid form.

If the melting point of a substance is higher than its surrounding temperature it will exist in a solid state. If its melting point is lower than its surrounding temperature it will exist in a liquid state. During winter the room temperature is much lower than the melting point of the oils so they become solid.

For example, the melting point of coconut oil is 24 degrees Celsius and the room temperature is between 10 and 20 degrees Celsius in winter. So it is kept near a hearth flame or in the sunlight to regain its liquid form.