Question

For what purpose is aqua regia is used

Answer 1

for dissolving unreactive metals like gold silver
or
cleaning the jewellery

Answer 2

Answer:

it is freshly prepared mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio 3:1 it can be dissolved good , platinum niether of. these acids can do so alone aquarezia regia is a highly corrosive fuming liquid it's is one of the few Regan's that is able to dissolve gold and platinum