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प्रश्न
Define one calorie.
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उत्तर
One calorie is the amount of heat energy required to raise the temperature of 1 gram of water through 1°C.
संबंधित प्रश्न
Name the three modes of transfer of heat.
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.
If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ______.
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?
Iron griddle (tava)
What will absorb heat?
Wax
What will absorb heat?
Plastic plate
Name the SI unit of heat.
Which temperature segment is chosen when determining the unit of heat? Why?
We reduce the heat by adding ______ while preparing fruit juice.
How can heat energy be generated?
The SI unit of heat energy is ______.
In summer, we prefer light – colored clothes and in winter we usually wear dark – colored clothes.
You would have noticed some space being left on railway tracks. Why?
Arrange the following in order of decreasing the expansion of heating: Steel, milk, air.
What is heat energy?
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?
The sum of the kinetic and potential energy is called the ______ of the molecules.
