Questions
Which element is used in measurement of high temperatures?
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By Expert Faculty of Sri Chaitanya
a
Mercury
b
Gallium
c
Boron
d
Copper
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Correct option is B
The melting point of Gallium is used as a temperature reference point. Gallium alloys are used in thermometers as a non-toxic and environmentally friendly alternative to mercury, and can withstand higher temperatures than mercury. The MP of Ga is very low while the BP of Ga is very high. The range of temperature for which Ga exists as a liquid is large.
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