Mechanism of material removal process P Abrasive grain

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Mechanism of material removal process
P Abrasive grain throwing and hammering
Q. Erosion due to vaporization
R. Chipping and erosion
S. Melting and partial vaporization
T. Electrolysis
1. ECM
2. USM
3. PAM
4. EDM
5. AJM

1. P Q R S T
  3 2 5 1 4
2. P Q R S T
  4 3 2 1 5
3. P Q R S T
  2 4 5 3 1
4. P Q R S T
  2 5 3 1 4

Correct Option: C

P–2, Q–4, R–5, S–3, T–1