The GATE Grind

GATE Physical Metallurgy: Materials characterization – Previous Year Questions

6 GATE previous year questions on Materials characterization (Physical Metallurgy, Metallurgical Engineering) with answers and explanations, from every paper.

  1. GATE 2021 MT Q31 (1 mark, Numerical answer) – An FCC crystal’s first X-ray reflection is at Bragg angle =30. The second reflection has Bragg angle degrees (one decimal place).
  2. GATE 2022 MT Q15 (1 mark, Multiple choice) – The sequence of peaks corresponding to the planes (in the order of increasing 2𝜃) observed in the X-ray diffractogram of a pure copper powder sample…
  3. GATE 2025 MT Q17 (1 mark, Multiple choice) – In optical microscopy, which one of the following combinations of wavelength (λ) and numerical aperture (NA) provides the best spatial resolution?
  4. GATE 2026 MT Q15 (1 mark, Multiple choice) – During metallography, Nital is the most commonly used for etching .
  5. GATE 2026 MT Q26 (1 mark, Multiple choice) – Residual stress present in a material can be determined by which one of the following techniques:
  6. GATE 2026 MT Q49 (2 marks, Numerical answer) – A metal with body-centered cubic structure is analyzed by X-ray diffraction using monochromatic X-rays of wavelength 0.154 nm. The diffraction angle 2…