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Question

If the pressure is reduced from the atmospheric pressure to a lower pressure, water will boil at a temperature ____.

A
<100 C
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B
>100 C
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C
=100 C
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D
Data insufficient
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Solution

The correct option is A <100 C
At atmospheric pressure (1 atm), water boils at 100 C. When pressure is reduced, liquids tend to boil at a temperature lower than their actual boiling point. So, water boils at a temperature lower than 100 C, when the surrounding pressure is reduced than 1 atm.

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