UPSEE Solved Model Paper 6

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Question : 87 of 150

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Aluminothermy used for on the spot welding of large iron structure is based on the fact that-

As compared to iron, aluminium has greater affinity for oxygen.
As compared to aluminium, iron has greater affinity for oxygen.
Reaction between aluminium and oxygen is endothermic.
Reaction between iron and oxygen is endothermic.

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