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प्रश्न
Fill in the blank
Heat is a form of _______.
पर्याय
electrical energy
gravitational energy
thermal energy
None of these
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उत्तर १
Heat is a form of energy.
उत्तर २
Heat is a form of thermal energy.
संबंधित प्रश्न
Match the following
| Column A | Column B |
| 1. mercury | 1. insulator |
| 2. wood | 2. water from 0°C to 4°C |
| 3. Aluminum | 3.absorbs |
| 4. contracts | 4.conductor |
| 5.black surface | 5. Thermometer |
What is heat ? State its S.I. unit.
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ______.
1 calorie is 4.81 joules.
When an object is heated, the molecules that make up the object
The unit of heat is
If you apply some heat energy to a substance, which of the following can take place in it?
Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?
Ice is kept in a double-walled container. Why?
We reduce the heat by adding ______ while preparing fruit juice.
How can heat energy be generated?
The SI unit of heat energy is ______.
The water in the black can becomes ______ than that in a white can after exposure to the sun.
Match the following
| 1. | Heat | a. | Good absorber |
| 2. | Temperature | b. | Form of energy |
| 3. | Black surface | c. | Insulators |
| 4. | Rubber, cork | d. | The measure of hotness or coldness |
Assertion: Small gaps left between railway lines.
Reason: It allows for the contraction of rails during summer.
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. why?
Warm air is ______.
