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प्रश्न
Write true or false for a given statement.
Kerosene contracts on heating.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
Write true or false for a given statement.
Water is a bad conductor of heat.
Fill in the blank
On heating a body, its temperature _______.
Name the instrument used to measure the temperature of a body.
The fig. shows a glass tumbler containing hot milk which is placed in a tub of cold water. State the direction in which heat will flow.
Why do telephone wires sag in summer ?
An empty glass bottle is fitted with a narrow tube at its mouth. The open end of the tube is kept in a beaker containing water. When the bottle is heated, bubbles of air are seen escaping into the water. Explain the reason.
What are the land and sea breezes? Explain their formation.
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
When heat energy is added to a substance, the kinetic energy of its particles ______ and so the particles move at a higher speed.
Explain the following effects of heat.
Expansion
