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प्रश्न
To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.
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उत्तर
Yes, she can apply the same method to keep a glass of cold drink cool because wool is a poor conductor of heat.
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संबंधित प्रश्न
What will absorb heat?
Iron griddle (tava)
What will absorb heat?
Water
When an object is heated, the molecules that make up the object
The unit of heat and temperature are the same.
The process of converting a liquid into a solid is called ________.
The amount of heat gained by a substance is equal to the product of its mass and latent heat.
Ice is kept in a double-walled container. Why?
You would have noticed some space being left on railway tracks. Why?
The sum of the kinetic and potential energy is called the ______ of the molecules.
Match the following:
| Column A | Column B | ||
| 1. | Heat | a. | Heat gained or lost in the change of state without any change in temperature |
| 2. | m × L. | b. | Heat gained or lost when there is no change of state |
| 3. | Temperature | c. | Form of energy |
| 4. | m × s × t | d. | SI unit of specific latent heat |
| 5. | J/Kg | e. | degree of hotness or coldness |
