Material Properties 11th Sep 25

What is the property of a material that allows it to return to its original shape after being deformed?

• Ductility

• Elasticity

• Plasticity

• Toughness

Which material property describes resistance to scratching or surface indentation?

• Hardness

• Toughness

• Strength

• Stiffness

What property measures a material’s ability to resist breaking when a force is applied suddenly?

• Toughness

• Brittleness

• Hardness

• Elasticity

Which property describes how easily a material can be drawn into a wire?

• Ductility

• Malleability

• Hardness

• Conductivity

What is the term for a material's resistance to deformation under load?

• Strength

• Stiffness

• Toughness

• Flexibility

If a material has a high yield strength but low ultimate tensile strength, it is likely to:

• Deform plastically over a long period

• Fracture soon after yielding

• Have high ductility

• Be ideal for springs

Which of the following is most likely to increase a metal’s fatigue life?

• Increase temperature

• Apply surface compressive stress (e.g., shot peening)

• Increase stress concentration

• Introduce more grain boundaries

What is creep?

• Sudden fracture under shock

• Deformation under constant load over time

• Rebound after loading

• Material fatigue under vibration

In stress-strain curves, what does the area under the curve represent?

• Stiffness

• Toughness

• Hardness

• Elastic limit

Which of these increases the hardness of steel?

• Heating to red hot and slowly cooling

• Adding copper

• Quenching after heating

• Increasing ductility