The substance which is used in a thermometer for measuring temperature is
A
Mercury
B
Copper
C
Gold
D
Lithium
Correct Option:
A
Explanation
Traditional liquid-in-glass thermometers commonly used mercury because it expands fairly uniformly with temperature, remains liquid over a wide range, does not wet glass significantly, and is easy to see. Copper, gold, and lithium are not used as the expanding liquid in conventional thermometers. Modern digital thermometers, of course, generally use electronic sensors instead.
