Question

define the terms : -

(a) Ductile

(b) Malleable

(c) Brittle

(d) Lustrous​

Answer 1

Answer:

1} Ductility is when a solid material stretches under tensile stress. If ductile, a material may be stretched into a wire. Malleability, a similar property, is a material's ability to deform under pressure (compressive stress). If malleable, a material may be flattened by hammering or rolling.

2} able to be hammered or pressed into shape without breaking or cracking.

3} A material is brittle if, when subjected to stress, it breaks without significant plastic deformation. Brittle materials absorb relatively little energy prior to fracture, even those of high strength. Breaking is often accompanied by a snapping sound.

4} bright, brilliant, radiant, luminous, lustrous mean shining or glowing with light. bright implies emitting or reflecting a high degree of light. brilliant implies intense often sparkling brightness. radiant stresses the emission or seeming emission of rays of light.

Answer 2

Answer:

1. when metal is beaten up into thin wires is called as ductility.
2. when metal is beaten up to convert into thin sheets is called as malleability.
3. hard by liable to break easily.
4. then substance which are shiny in nature.