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Material property: definition of hardness (ability to resist indentation/scratch) Select the option that correctly captures the essence of hardness as a mechanical property. Choose the correct statement.

Difficulty: Easy

It can be drawn into wires
It breaks with little permanent distortion
It can cut (scratch/indent) another metal
It can be rolled or hammered into thin sheets

Correct Answer: It can cut (scratch/indent) another metal

Explanation:

ConceptHardness is the resistance to localized plastic deformation (indentation/scratch). A harder material can scratch or indent a softer one.

Eliminate options

(a) Ductility (wire drawing).
(b) Brittleness (tendency to fracture).
(d) Malleability (sheet forming).

Final AnswerIt can cut (scratch/indent) another metal

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