What standard you must see on gold ornament?
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4
Answer:
it's colour get changed and bacteria coverd it
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17
Explanation:
BIS Mark. BIS is the only agency in India approved by the government for hallmarking gold articles of any kind to ensure their purity. Any gold jewellery which is hallmarked by the BIS will bear its logo, indicating that its purity is verified in one of the licensed laboratories of BIS.
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