Question

Match List I with List II

LIST I (Hardness Test)	LIST II (Type of indenter used)
A. Rockwell hardness test	I. Square-based diamond-pyramid
B. Vickers hardness test	II. Hard steel ball
C. Brinell hardness test	III. Rhombic-based diamond-pyramid
D. Knoop hardness test	IV. Diamond cone

• A. A - I B - II C - III D - IV
• B. A - II B - III C - I D - IV
• C. A - I B - II C - IV D - III
• D. A - III B - I C - II D - IV

Hint:

Different hardness tests use various indenters like diamonds steel balls or cones each suitable for specific materials and testing conditions

Answer 1

The Correct Option is A

- A diamond cone indenter is utilized for the Rockwell hardness test (Option IV).
- A square-based diamond-pyramid indenter is utilized for the Vickers hardness test (Option I).
- A hard steel ball indenter is utilized for the Brinell hardness test (Option II).
- A rhombic-based diamond-pyramid indenter is utilized for the Knoop hardness test (Option III).