Materials: Properties, Testing & Heat Treatment is one of 9 topics in the Grade 12 Mechanical Technology CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. Which material property describes the ability to return to its original shape after a deforming force is removed?
Elasticity
Plasticity
Brittleness
Hardness
Answer: Elasticity — Elasticity is the ability of a material to return to its original shape once a deforming force is removed, provided the elastic limit is not exceeded.
Easy
2. Which property describes a material's ability to be drawn into a thin wire without breaking?
Ductility
Malleability
Toughness
Hardness
Answer: Ductility — Ductility is the ability of a material to be drawn or stretched into a thin wire without breaking, important for materials like copper used in wiring.
Medium
3. Name the property describing a material's ability to absorb energy and deform without fracturing, important for components experiencing sudden impact loads.
Answer: toughness — Toughness combines strength and ductility, describing a material's ability to absorb energy and deform without fracturing under impact loading.
