Question

Water boils at 100 °C at sea level but boils at 96 °C in the lab. Write the reason behind it.

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Answer 1

Perhaps the lab is not at sea level. A barometer that reads 760 mm of mercury at sea level may only register 720 mm if the barometer is located in a mountainous region. Water that boils at 100 deg C at sea level will boil at a lower temperature at higher elevations.