Give reasons-
a. For any substance, Why does the temperature remain constant during the change of
state?
b. Desert cooler cools better on a hot dry day.
c. Awooden table should be called a solid.
Answers
Answer:
Explanation:
a) The temperature of any substance remain constant during the change of state because the heat energy supplied is used up in changing the state of matter and also this heat is used for breaking of several bonds or attractive forces. This heat, which does not raise the temperature of the body, is called Latent heat.
b)The cooling in a desert cooler is caused by the evaporation of water. A desert cooler cools better on a hot and dry day because the higher temperature on a hot day increases the rate of evaporation of water and the dryness of air (low humidity of air) also increases the rate of evaporation of water.
c) a wooden table is called a solid because its molecules are closely packed and have stronger attraction force
Explanation:
Answer:
Explanation:
a) The temperature of any substance remain constant during the change of state because the heat energy supplied is used up in changing the state of matter and also this heat is used for breaking of several bonds or attractive forces. This heat, which does not raise the temperature of the body, is called Latent heat.
b)The cooling in a desert cooler is caused by the evaporation of water. A desert cooler cools better on a hot and dry day because the higher temperature on a hot day increases the rate of evaporation of water and the dryness of air (low humidity of air) also increases the rate of evaporation of water.
c) a wooden table is called a solid because its molecules are closely packed and have stronger attraction force
hope it helps ☺️☺️☺️☺️☺️☺️
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