20 ) _________ is used as a fuse wire in thermite welding.

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Solution

Magnesium is used as a fuse wire in thermite welding.
Thermite Welding refers to fixing of molten metals. It is an exothermic process.
Magnesium is used in fuse wire for thermite welding, because magnesium burns with a dazzling flame and produces huge amount of light.
So , Magnesium is used as a fuse wire in thermite welding.

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(a) Of what substance is the fuse wire made ? Why ?

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