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प्रश्न
What are the good and bad conductors of heat ? Give two examples of each.
उत्तर
Good conductors. “The substances through which heat is easily conducted are called good conductors of heat.”
Example : Copper, iron.
Bad conductors. “The substances through which heat is not conducted easily are called bad conductors of heat or poor conductors of heat.”
Example : Wood, cloth.
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संबंधित प्रश्न
Write true or false for a given statement.
Solids expand the least and gases expand the most on being heated.
Write true or false for a given statement.
A mercury thermometer makes use of the property of the expansion of liquids on heating.
Fill in the blank
Still air is an __________ of heat.
Select the correct alternative
Which of the statement is correct
Describe one experiment to show that liquids expand on heating.
State one application of thermal expansion of liquids.
Why is a tea kettle provided with an ebonite handle ?
Why is an oven made of double walls with the space in between filled with cork ?
In ice cubes, the force of attraction between the water molecules is ______.
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 |
