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One day Reeta went to a jeweller’s shop with her mother. Her mother gave 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» <html><body><p>To <a href="https://interviewquestions.tuteehub.com/tag/polish-1157825" style="font-weight:bold;" target="_blank" title="Click to know more about POLISH">POLISH</a> a gold ornament, it is dipped in a liquid <a href="https://interviewquestions.tuteehub.com/tag/called-907796" style="font-weight:bold;" target="_blank" title="Click to know more about CALLED">CALLED</a> aqua regia (a mixture of hydrochloric acid and nitric acid). On getting the environment of aqua regia, the <a href="https://interviewquestions.tuteehub.com/tag/outer-1142537" style="font-weight:bold;" target="_blank" title="Click to know more about OUTER">OUTER</a> layer of gold dissolves, and the inner shiny layer appears. The dissolving of the layer causes a <a href="https://interviewquestions.tuteehub.com/tag/reduction-621019" style="font-weight:bold;" target="_blank" title="Click to know more about REDUCTION">REDUCTION</a> in the <a href="https://interviewquestions.tuteehub.com/tag/weight-1451304" style="font-weight:bold;" target="_blank" title="Click to know more about WEIGHT">WEIGHT</a> of the jewelry.</p></body></html>


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