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Matter In Our Surroundings
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it ? Where is the energy you spend going?
While pushing the rock, transfer of muscular energy takes place. This energy is entirely spent in doing work against friction between the rock and the ground.
Since, the rock does not move, no work is done by the body.
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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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