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प्रश्न
1 calorie is 4.81 joules.
विकल्प
Right
Wrong
उत्तर
1 calorie is 4.81 joules- Wrong
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संबंधित प्रश्न
Fill in the blank
Heat is a form of _______.
Define the term heat.
Define one kilo-calorie of heat.
What will absorb heat?
Steel spoon
What will absorb heat?
Wax
What will absorb heat?
Glass vessel
Give a scientific reason.
In winter, why does an iron pillar feel colder than a wooden pole?
Complete the following sentence:
CGS units of heat is _________
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?
______ is a form of energy.
We can absorb heat by rubbing two surfaces of some substances.
In the past, people used to rub two wooden pieces together to light fire.
The water in the black can becomes ______ than that in a white can after exposure to the sun.
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 |
Explain the following effects of heat.
Chemical changes
