Mercury boils at 367oC. Mercury thermometers are made such that they can measure temperature up to 500oC. This done by
Filling nitrogen gas at high pressure above the mercury column
Filling carbondioxide gas above mercury column
FillIng oxygen gas at low pressure above the mercury column
None of the above
A
Filling carbondioxide gas above mercury column
B
Filling nitrogen gas at high pressure above the mercury column
C
FillIng oxygen gas at low pressure above the mercury column
D
None of the above
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Solution
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When nitrogen gas is filled at high pressure, the boiling point of mercury is increased which extends the range upto 500oC,
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