Aluminothermy used for the spot welding of large iron sturctures is ba – InterviewSolution

1.	Aluminothermy used for the spot welding of large iron sturctures is based upon the fact that
Answer» As COMPARED to IRON, aluminium has greater AFFINITY for oxygen As compared to aluminium, ironhas greater affinity for oxygen Reaction between aluminium and oxygen is ENDOTHERMIC Reaction between iron oxide and alumi-nium is endothermic Answer :A

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