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JIPMER 2009
Exam
JIPMER
Year
2009
Subject
Physics
Chapter
Kinetic Theory of Gases

JIPMER 2009 · Physics · Kinetic Theory of Gases

Mercury boils at 367^ C . However, mercury thermometers are made...

Mercury boils at 367∘C367^{\circ} \mathrm{C}. However, mercury thermometers are made such that they can measure temperature upto 500∘C500^{\circ} \mathrm{C}. This is done by

Options

  1. Amaintaining vacuum above mercury column in the stem of the thermometer
  2. Bfilling nitrogen gas at high pressure above the mercury column
  3. Cfilling oxygen gas at high pressure above the mercury column
  4. Dfilling nitrogen gas at low pressure above the mercury column

Correct answer

B. filling nitrogen gas at high pressure above the mercury column

Step-by-step solution

If we fill nitrogen gas at high pressure above mercury level, the boiling point of mercury is increased which can extend the range upto 500∘C500^{\circ} \mathrm{C}.
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