Uses of Gold (Au) in Everyday Life
From the Gold page's study notes: Gold (Au) serves in alloys, infrastructure and the technologies of daily life. The full list, with Bangladesh examples, sits below.
This is the fast lane: one page, one fact, zero digressions. Read the quick answer, check the table, and if your exam needs the full derivation, the sections below walk through it step by step — in Bangla and English, like every page here. Need the whole picture instead — history, characteristics, uses, exam questions? The full Gold page is one click away.
Gold at work around you
Every use below comes straight from the full Gold study page, where each point also carries the chemistry behind it and an exam-style question. Skim the list here; open the full page when revision time comes.
Uses of Gold in the study notes
- Jewellery and wedding wealth: in Bangladesh the bride’s 21–22 carat bangles and tikli, bought by bhori, are her traditional stridhan — savings that never rust, rot or burn.
- Electronics: the bonding wires and connector contacts inside every smartphone and computer are gold, because a gold contact never oxidises and never raises its resistance.
- Medicine and dentistry: gold crowns outlast decades of chewing, and tiny gold particles colour the result line on rapid test strips, from pregnancy kits to COVID-19 antigen tests.
- National reserves: central banks, Bangladesh Bank included, hold gold bars as the crisis-proof anchor of a country’s wealth; Olympic “gold” medals, meanwhile, are silver plated with at least 6 grams of real gold.
Where you meet it
- At a Bangladeshi wedding the bride’s bangles and tikli are 21–22 carat gold, weighed by the jeweller in bhori (11.66 grams) before the elders settle the bill.
- Every smartphone holds roughly 0.03 grams of gold in its circuitry — negligible in one handset, a small mine’s worth across a hundred million of them.
- Coin hoards and temple idols come out of the soil after centuries still bright — the archaeologist’s proof that gold simply waits out time.
Students also ask
Why is Gold important in Bangladesh?
The full study page connects Gold to Bangladeshi life — school labs, local industries, health and the NCTB syllabus. This quick-answer page is the fast summary; the element page is the full story.
Where will I meet Gold in the NCTB exam?
Questions on Gold's uses are a recurring pattern in Class 9–10 and HSC chemistry. The element page ends with six exam-style questions in both languages — practise those and this pattern stops costing marks.