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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 a reason for your answer.
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
Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum
Define one kilo-calorie of heat.
What will absorb heat?
Wooden spoon
What will absorb heat?
Soil
Which temperature segment is chosen when determining the unit of heat? Why?
Which of the following substances will absorb more heat energy?
The process of converting a liquid into a solid is called ________.
______ is a form of energy.
The water in the black can becomes ______ than that in a white can after exposure to the sun.
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 |
