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GATE 2023 MT – Question 42

Mineral Processing and Extractive Metallurgy · Non-ferrous extraction · 2 marks · Multiple choice

Match processes with applications.

Column I:

P. Fused salt electrolysis

Q. Carbothermal reduction

R. Oxidation-refining

S. Matte converting

Column II:

1. Ironmaking

2. Aluminium extraction

3. Copper extraction

4. Steelmaking

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

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Show answer and explanation

Correct answer: (A) P – 2, Q – 1, R – 4, S – 3

Explanation

Fused-salt electrolysis produces aluminium (P2). Carbothermal reduction is central to ironmaking (Q1). Oxidation refining removes impurities in steelmaking (R4). Matte converting belongs to copper extraction (S3).

Thus **A**.