A man went door possing as goldsmith. He promised to bring back the glitter of old and gold ornaments. As unsuspecting lady gave a set of gold bangles to him, which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was ipset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?

A man went door possing as goldsmith. He promised to bring back the gl

1.	A man went door possing as goldsmith. He promised to bring back the glitter of old and gold ornaments. As unsuspecting lady gave a set of gold bangles to him, which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was ipset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
Answer» SOLUTION :the goldsmith dipped the set of the GOLD bangles in aqua regia solution. Aqua regia is a freshly PREPARED mixture of 1 part of conc. `HNO_3` and 3 parts of conc. HCL by volume . Aqua regia dissolved a considerable amount of gold from the dipped gold bangles and hence reduced their weight drastically. The dishonest goldsmith can recover the dissolved gold from aqua regia by a suitable treatment.