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MCQ
Which reaction is used in thermite welding?
Chemistry
A Zn + CuSO4 to ZnSO4 + Cu
B 2Na + Cl2 to 2NaCl
C CaO + H2O to Ca(OH)2
D 2Al + Fe2O3 to Al2O3 + 2Fe
Explanation

The thermite reaction between aluminium and iron oxide produces molten iron used in welding.

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