Which of the following is an alloy?

Silver

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Gallium

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22

carat gold

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24

carat gold

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Solution

The correct option is D $22$ carat gold
22 karat gold contains 22 parts gold and 2 parts of other metals added as alloy. ... 18 karat gold contains 18 parts pure gold with 6 parts of other metals added. In the West the karat is expressed in fineness.
Hence 22 carat gold is an alloy.

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