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Matter In Our Surroundings
A body is thrown vertically upward. Its velocity goes on decreasing. What happens to its kinetic energy as its velocity becomes zero?
As the velocity of the body becomes zero when it is thrown vertically upwards, whole kinetic energy gets converted into potential energy. That is, its kinetic energy becomes zero.
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What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
Give two reasons to justify
Water at room temperature is a liquid.
Give two reasons to justify
An iron almirah is a solid at room temperature.
Why is ice at 273K more effective in cooling than water at the same temperature ?
What produces more severe burns, boiling water or steam ?
8. Name A, B, C, D, E and F in the following diagram showing state change :
Both boiling and evaporation convert a liquid into vapour. What is the difference between the two process
Define Evaporation
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