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GATE 2025 MT – Question 38

Mineral Processing and Extractive Metallurgy · Primary and secondary steelmaking · 2 marks · Multiple choice

Match the steel-plant processes in Column I with the associated information in Column II.

Column I:

P. Corex

Q. Electric Arc Furnace

R. Midrex

S. Continuous Casting

Column II:

1. Melter-gasifier

2. Natural gas reformer

3. Electromagnetic stirrer

4. Hot heel

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

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Show answer and explanation

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

Explanation

COREX uses a melter-gasifier (P1). An electric arc furnace can retain a hot heel (Q4). MIDREX uses a natural-gas reformer to supply reducing gas (R2). Continuous casting can use electromagnetic stirring (S3). Therefore **A**.