Simple Stress and Strain MCQ with answer and solution

Concept

A ductile material shows large deformation before it breaks.

Step-by-step solution

1. Ductile materials stretch a lot before rupture. 2. Mild steel is a good example. 3. Brittle materials break with very little deformation. 4. So the answer is Ductile.

Explanation

Ductility is the property of large plastic deformation before rupture. Mild steel and copper are ductile. This gives warning before failure.

Why the other options are wrong

B: Plastic describes permanent deformation, not the property before rupture. C: Brittle breaks with little deformation. D: Elastic materials return to their shape after unloading.

Shortcut

Large stretch before break = ductile.

Common mistake

Choosing Plastic because it also means permanent deformation.