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STD 11 - 10.1, thermonetry,thermal expansion and calorimetry — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 10.1, thermonetry,thermal expansion and calorimetry4 Marks
MCQ
A liquid boils when its vapour pressure equals
  • ✓
    The atmospheric pressure
  • B
    Pressure of $76.0 \,cm$ column of mercury
  • C
    The critical pressure
  • D
    The dew point of the surroundings
✓

Answer

Correct option: A.
The atmospheric pressure
a
(a) A liquid gets converted into vapor phase when its vapor pressure becomes equal to the atmospheric pressure.

That's why, a liquid boils faster at high altitude than sea level                              

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