Pure Gold is most malleable and ductile metal. Gold used in jewellery is harder. Give reason.

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Solution

Pure Gold is very soft which makes it most malleable and ductile.
In order to make jewellery, some impurities are mixed into it which reduces the purity of the Gold.
Pure Gold is alloyed with Copper and Silver.
The alloy formed retains its golden colour but is harder than the pure Gold which is used in making the jewellery.

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