Classify the following into lustrous materials-gold chain, plastic bottle,cotton shirt and aluminum rod.
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Gold chain and aluminum rod - lustrous material
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A clean gold chain has a beautiful shine and if maintained, you can keep it this way. While not as difficult to maintain as silver, over time gold chains can lose their luster and become dull.
Plastic bottle are not lustrous because being lustrous is the characteristic of metal which we know that it is not and neither is it polished .
Cotton shirt - NON lustrous
aluminum rod is lustrous
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