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प्रश्न
1 calorie is 4.81 joules.
पर्याय
Right
Wrong
उत्तर
1 calorie is 4.81 joules- Wrong
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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 |
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
While deciding the unit for heat, which temperature interval is chosen? Why?
Cooking utensils are made from metals due to their property of ______.
What will absorb heat?
Water
What will absorb heat?
Wooden spoon
Write scientific reason.
In the cold regions, snow falls in winter.
The unit of heat and temperature are the same.
Which of the following substances will absorb more heat energy?
Calorie is the unit of ______.
A device in which the loss of heat due to conduction, convection and radiation is minimized is ______.
We feel the heat on our body when the ______ shines.
How can heat energy be generated?
A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile
The water in the black can becomes ______ than that in a white can after exposure to the sun.
You would have noticed some space being left on railway tracks. Why?
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 ______.
Heat gained by a body depends upon which factors?
