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Aluminothermy used for on the spot weldi...

Aluminothermy used for on the spot welding of large iron structures is based upon the fact that

A

As compared to iron , aluminium has greater affininty for oxygen

B

As compared to aluminium , iron has greater affininty for oxygen

C

Reaction between aluminium and oxygen is endothermic

D

Reaction between iron oxide and aluminium is exothermic

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The correct Answer is:
a,d
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NARAYNA-METTALURGY-Multiple answer
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