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?
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Answer:
because the upper layer is removed......
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the reason for lost of wieght in it is because when we polish it . That time the goldsmith by using a acid he takes an tin layer from it to give it a shine so it has some loss in its weight
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