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Match each metallurgical furnace process with its definition:

A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
Roasting burns sulphides in excess air. Calcination heats carbonates in limited air. Thermite uses Al to weld rails.
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