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GATE 2026 MT – Question 41

Mineral Processing and Extractive Metallurgy · Ironmaking · 2 marks · Multiple choice

Match the unit operations in Column I with the resulting products in Column II.

Column I:

(P) COREX process

(Q) Bayer process

(R) Matte smelting

(S) MIDREX process

Column II:

(1) Direct-reduced iron

(2) Pig iron

(3) Alumina

(4) Copper

  1. P-4, Q-3, R-2, S-1
  2. P-2, Q-3, R-4, S-1
  3. P-1, Q-3, R-4, S-2
  4. P-2, Q-4, R-3, S-1

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Correct answer: (B) P-2, Q-3, R-4, S-1

Explanation

COREX smelting reduction produces liquid hot metal or pig iron (2). Bayer processing produces alumina (3). Copper matte smelting belongs to the copper extraction route (4). MIDREX produces solid direct-reduced iron (1). Consequently **P2,Q3,R4,S1, B**.

Matte smelting denotes the copper extraction route here; its immediate product is copper-bearing matte rather than finished metallic copper.