Question

1. One day Reeta went to a jeweller's shop with her mother. Her mother gave an old gold Jewellery to the goldsmith to polish. Ne day when they brought the Jewellery back, they found that there was a slight loss in its weight. Can you suggest a reason for the loss in weight?​

Answer 1

Answer:

In the jeweler's shop, to polish gold jewelry it is dipped in an acid called Aqua Regia. Aqua Regia dissolves the outer layer of gold. So, the inner shiny layer is visible.