In thermite welding, to ignite the mixture we use :

magnesium ribbon

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potassium ribbon

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calcium ribbon

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manganese ribbon

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Solution

The correct option is A magnesium ribbon
Thermite welding also known as exothermic welding and the reaction of metal oxide and aluminium powder reaches very high temperature. The activation energy for this reaction is very high and the initiation requires the use of a booster material such as powder magnesium metal.

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Similar questions

Aluminium is used in thermite welding:

(a) What is thermit?

(b) What is ignition mixture?

{F e}_{2} O_{3}

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