The GATE Grind

GATE Mineral Processing and Extractive Metallurgy: Mineral beneficiation – Previous Year Questions

9 GATE previous year questions on Mineral beneficiation (Mineral Processing and Extractive Metallurgy, Metallurgical Engineering) with answers and explanations, from every paper.

  1. GATE 2022 MT Q38 (2 marks, Multiple choice) – Match mineral-processing operations with physical principles. Column I: P. Flotation Q. Jigging R. Tabling S. Comminution Column II: 1. Difference in…
  2. GATE 2022 MT Q58 (2 marks, Numerical answer) – A sieve made of steel wire of diameter 53 µm has an aperture size of 74 µm. Its mesh number is (round off to the nearest integer).
  3. GATE 2023 MT Q17 (1 mark, Multiple choice) – The most effective concentration step for sulfide ores is
  4. GATE 2023 MT Q39 (2 marks, Multiple choice) – An elutriator separates particles by size in flowing air, as shown. Assuming spherical particles and turbulent airflow, the suspended-particle…
  5. GATE 2023 MT Q59 (2 marks, Numerical answer) – Copper ore assaying 10 wt.% Cu is fed to a concentration plant at the rate of 100 tons/h. If the grades of concentrate and tailing are 30 wt.% Cu and…
  6. GATE 2024 MT Q17 (1 mark, Multiple choice) – Wet high intensity magnetic separators (WHIMS) are used to concentrate
  7. GATE 2024 MT Q18 (1 mark, Multiple choice) – Which one of the following reagents is NOT used in froth flotation process?
  8. GATE 2025 MT Q24 (1 mark, Multiple choice) – Match the elements in Column I with their respective ores in Column II. Column I: P. Al Q. Fe R. Ti S. Cu Column II: 1. Rutile 2. Hematite 3.…
  9. GATE 2025 MT Q54 (2 marks, Numerical answer) – Spherical galena particles have the same settling velocity in water as spherical quartz particles of diameter 25 μm. The galena diameter is μm…