Ordinary mercury in glass thermometer is used for measuring temperatur – McqOptions

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1.	Ordinary mercury in glass thermometer is used for measuring temperature upto 120¬∞C. However, for measuring higher temperature upto __________ ¬∞C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.$
A.	250
B.	350
C.	550
D.	700
Answer» D. 700

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