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प्रश्न
Fill in the blank
Still air is an __________ of heat.
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उत्तर
Still air is an insulator of heat.
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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
The temperature of boiling water is _______
Name two substances which expand on heating.
State one application of thermal expansion of liquids.
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.
Name a solid which is a good conductor of heat.
Why is a tea kettle provided with an ebonite handle?
Why are chimneys provided over furnace in factories?
The bottom of a cooking utensil is painted black. Give the reason.
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
