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why mercury is used inside a glass tube in which platinum wire is fused

why mercury is used inside a glass tube in which platinum wire is fused

Grade:Upto college level

1 Answers

Gaurav
askIITians Faculty 164 Points
7 years ago
Mercury is the only liquid metal. So it is the only metal which can be filled in a glass tube. Being a metal it is conductor of both electricity and heat. It expands on heating.

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