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प्रश्न
Write true or false for a given statement.
On touching a lump of ice, we feel cold because some heat passes from our body to the ice.
विकल्प
True
False
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उत्तर
True.
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संबंधित प्रश्न
A wooden spoon is dipped in a cup of ice cream. Its other end ______.
Write true or false for a given statement.
Black surfaces are the poor absorbers of heat radiations.
Fill in the blank
Heat transfer in liquids and gases is by ________.
Select the correct alternative
Heat in a liquid is transferred by
State the direction of heat transfer by way of convection.
Why is the freezing chest in a refrigerator fitted near its top?
The earth receives heat from the sun by ______.
How does a fever get lowered by putting a cold compress on the forehead of a patient?
The handles of cooking utensils are made of ______.
Take two similar transparent glass bottles having wide mouths. Put a few crystals of potassium permanganate or pour a few drops of ink in one bottle. Fill this bottle with hot water. Fill the other bottle with cold water. Cover the cold water bottle with a thick piece of paper such as a postcard. Press the postcard firmly with one hand and hold the bottle with the other hand. Invert the bottle and place it on top of the hot water bottle. Hold both the bottles firmly. Ask some other person to pull the postcard. Observe what happens. Explain.
