The GATE Grind

GATE 2019 MT – Question 41

Materials Science and Non-Metallic Materials · Ceramics and defects · 2 marks · Multiple choice

Match ceramics P mullite, Q spinel ferrites, R tungsten carbide, S barium titanate with applications 1 cutting tools, 2 refractories, 3 piezoelectric, 4 soft magnet.

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

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Show answer and explanation

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

Explanation

Mullite is refractory, P–2. Spinel ferrites serve as soft magnetic materials, Q–4. Hard wear-resistant tungsten carbide is used in cutting tools, R–1. Ferroelectric barium titanate exhibits piezoelectric response, S–3. Thus D.