Question

classification of materials
1.lustre ​

Answer 1

Answer:

Examples of material having lustre or shine are metals such as gold ,silver, copper, aluminium and iron, metal alloys such as steel ,stainless steel ,brass and diamond. Those materials which have dull appearance are said to have no lustre. For example: paper, wood, chalk, cotton, plastic, rubber ,cardboard etc.

Answer 2

Answer:

METALS ARE LUSTROUS : HAVE A SHINING SURFACE.