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प्रश्न
Select good and bad conductors of heat from the following:
copper, mercury, wood, iron, air, saw-dust, cardboard, silver, plastic, wool.
उत्तर
Good conductors — Mercury, copper, silver, iron.
Bad conductors — Wood, air, saw dust, plastic, wool, cardboard.
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संबंधित प्रश्न
Write true or false for a given statement.
Heat flows from a body at a high temperature to a body at a low temperature when they are kept in contact.
Write true or false for a given statement.
A mercury thermometer makes use of the property of the expansion of liquids on heating.
Write true or false for a given statement.
Kerosene contracts on heating.
Write true or false for a given statement.
Water is a bad conductor of heat.
Name the instrument used to measure the temperature of a body.
What do you understand by thermal expansion of a substance ?
What are the good and bad conductors of heat ? Give two examples of each.
Why is a tea kettle provided with an ebonite handle ?
Why are quilts filled with fluffy cotton?
When we heat them the force of attraction between the molecules decreases and the ice cubes become ______.
