Question

One day Reeta went to a jeweller's shop with her mother. Her mother gave
an old gold jewellery to the goldsmith to polish. Next 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

Explanation:

because goldsmith polished the jewellery . and the weight of the jewellery loss

Answer 2

Answer:

I think the gold Smith has remove the upper layer because it has lost his luster because it has been a long time it is in the contract of oxygen ,and other gases so the gold Smith remove the upper layer and the gold is a metal so it has luster so

when he removed the upper layer the layer below it came up and before it was not on contact with oxygen and other gases so it was bighter than the upper layer

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