Match the following Group I 1. Blunting of grinding wheels2.

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Match the following
Group I
1. Blunting of grinding wheels
2. Shaping of grinding wheels
3. Sharpening of grinding wheels
4. Clogging of grinding wheels
Group II
P. Dressing
Q. Loading
R. Glazing
S. Trueing

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

Correct Option: C

P–3 Q–1 R–4 S–2