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प्रश्न
Why is a tea kettle provided with an ebonite handle?
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उत्तर
Tea kettles are provided with wooden or ebonite handles. The wood or the ebonite being the insulators of heat, does not pass heat from the utensils to our hand. Thus, we can hold the hot utensils or pans comfortably by their handles.
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संबंधित प्रश्न
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Fill in the blank
We use a ________ for measuring the temperature of a body.
Fill in the blank
Liquids expand _______ than the solids.
Fill in the blank
Gases expand _______ than the liquids.
Describe one experiment to show that liquids expand on heating.
State one application of thermal expansion of liquids.
What are the good and bad conductors of heat ? Give two examples of each.
Match the following
| 1. | Solid to liquid | a. | Condensation |
| 2. | Liquid to gas | b. | Deposition |
| 3. | Gas to solid | c. | Melting |
| 4. | Gas to liquid | d. | Vaporization |
Mention the factors affecting the flow of heat.
Explain the following effects of heat.
Expansion
