1.

What is the physical state of water at: a. 250^(@)Cb. 100^(@)C ?

Answer»

Solution :(a) The BOILING point of water is `100^(@)C`. So, the physical state of water at a temperature of `250^(@)C` (which is much above its boiling point) will be 'gaseous state'.
(b)The physical state of water at its boiling point temperature of `100^(@)C` will be both 'liquid state' as well as 'gaseous state'. This is because at its boiling point (of `100^(@)C`), the liquid state of water STARTS CHANGING into its gaseous state (steam).


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