No, not all lustrous materials are metals. While metals like gold and silver are lustrous, non-metals like diamonds and certain minerals also exhibit luster. Luster is not exclusive to metals but depends on surface properties.
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Not all lustrous materials are metals, though many metals like gold, silver, and copper are known for their shiny appearance. Luster, the quality of reflecting light, is also found in non-metallic materials such as diamonds, quartz, and some synthetic materials like glass. These materials reflect light due to their smooth surfaces and specific atomic structures. Therefore, while luster is a common characteristic of metals, it is not exclusive to them and can be observed in various non-metallic materials as well.
For more CBSE Class 6 Science Curiosity Chapter 6 Materials Around Us Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-6/