List two objects from the kitchen that are: (a) lustrous and hard (b) non-lustrous and soft.
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Lustrous materials are those that have a shine on them. Due to this property metals are widely used for making jewellery. Example: Gold, silver and most metals are lustrous in nature. Non-lustrous materials are dull in appearance.
WOOD,PAPER,PLASTIC SHEET,AND OTHER ARE EXAMPLE OF NON LUSTROUS SUBSTANCE . Non lustrous substancesare that which do not shine or glow
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a) spoon is a metal thus it is lustrous and hard
b) a sponge that is used to wash dishes in non lustrous and soft
b) a sponge that is used to wash dishes in non lustrous and soft
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