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प्रश्न
Write true or false for a given statement.
Water is a bad conductor of heat.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
Write true or false for a given statement.
Telephone wires are kept tight between the two poles in summer.
A glass stopper stuck in the neck of a bottle can be removed by pouring hot water on the neck of the bottle. Explain why ?
Why is a cement floor laid in small pieces with gaps in between?
One end of a steel girder in a bridge is not fixed, but is kept on roliers. Give the reason.
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
Why do we use cooking utensils made up of copper.
Why do we prefer to wear white or light coloured clothes in summer and black or dark coloured clothes in winter ?
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
