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CBSE Class 10 Answered

If is mercury a poor conductor of heat then, why is it used in thermometers?

Asked by prasutally | 24 May, 2019, 01:44: PM
Expert Answer
Because mercury has low thermal capacity, high heat conductivity, inertness in relation to a glass capillary tube and a high boiling point, it is an ideal thermometric liquid except for its relatively high melting point.
Also, it has high coefficent of expansion, hence slightest change in temparature is notable.
 


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