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Which of the following substance has no fixed melting point? 1.ice 2.glass 3.water 4.copper

Which of the following substance has no fixed melting point?
    1.ice
    2.glass
    3.water
    4.copper 

Grade:7

1 Answers

Arun
25763 Points
one year ago
Glass is a super cooled liquid it itself flows like a liquid due to its own weight ,if subjected for long duration of time. An old glass window appears to be translucent then a new one due to its property of flowing like other liquids and thus a fix melting point for glass is not defined.

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