Question

Aluminium powder is used in thermite welding because :
(1) it is strong reducing agent
(2) it is strong oxidizing agent
(3) it is corrosion resistant
(4) it is a good conductor of heat.

August 19, 2024

Answer

1. it is strong reducing agent.

Reason — Aluminium is a strong reducing agent, it reduces Fe₂O₃, to Fe which fills the gap. Hence it is used for thermite (Fe₂O₃) welding.

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