Advertisements
Advertisements
प्रश्न
Define one calorie.
Advertisements
उत्तर
One calorie is the amount of heat energy required to raise the temperature of 1 gram of water through 1°C.
संबंधित प्रश्न
Select the correct alternative
A thermometer uses
Name the mode of transfer of heat in the following :
(a) solid,
(b) liquid,
(c) gas
(d) vacuum
Define the term heat.
What will absorb heat?
Steel spoon
What will absorb heat?
Iron griddle (tava)
What will absorb heat?
Soil
1 calorie is 4.81 joules.
Write scientific reason.
In the cold regions, snow falls in winter.
When an object is heated, the molecules that make up the object
The process of converting a liquid into a solid is called ________.
Calorie is the unit of ______.
We reduce the heat by adding ______ while preparing fruit juice.
We can absorb heat by rubbing two surfaces of some substances.
A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile ______.
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 reason for your answer.
Black color is a ______ absorber of heat.
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 |
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
What is heat energy?
Explain the following effects of heat.
Chemical changes
