Question
Sun July 31, 2011 By: Raghu Rao
 

which solution is used by the goldsmithes for making gold more shinning

Expert Reply
Mon August 01, 2011

When a gold ornament which is to be polished is dipped in a liquid called Aqua regia, the gold melts in the liquid. The outer layer of the gold melts and we can see the shiny inner layer.

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