Question

How would you confirm that a colourless liquid given to you is
pure water?​

Answer 1

$\huge {\underline{\red {Answer}}}$

If the boiling point and freezing point of the given liquid comes out to be 100℃ or 373K and 0℃ or 273K respectively under 1 atm pressure, it confirms that the given liquid is pure water.

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Answer 2

Hey

subah se merese baat krke irritate hogye? xD

I'm Sorry

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If the boiling point of the liquid is 100℃ and It's freezing point is 0℃ under 1 atm pressure, then it is confirmed that the liquid is Pure water.

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Hope it helps

Have a good day :)