1. A body that has been stressed to beyond its elastic limit will not entirely resume its original form on removal of the force, but will have some degree of permanent deformation. What is this known as?
(a) Flexi-formed
(b) Permanent set
(c) Unrecycble
(d) Maxi-stressed (1)

2. Some materials (e.g. clay and wax) have practically no tendency to resume their original forms after a stressing force has been removed. What are these Materials said to be?
(a) Ground resources
(b) Plastic
(c) Soft materials
(d) Unknown (1)

3. The ability of metals to stand considerable tensile deformation (stretching) without rapturing and while still offering incresing resistance is a valuable property. These are referred to as?
(a) Ductility
(b) Titanium
(c) Strecthable
(d) Durability (1)

4. Materials that have a tendency to fracture without appreciable deformation are said to be?
(a) Omnipotent
(b) Brittle
(c) Fluidised
(d) Reluctant (1)

5. Tempered Steel, glass, ivory, rubber are all very_______?
(a) Earthly
(b) Recycles
(c) Reutilizers
(d) Elastic