Testing silver and gold

In this video, we show several further methods for testing silver and gold, using our imitation gold and silver ingots.
1) Nitric acid test
2) Magnet test
3) Scratch test

[@epicbengal7239]

Nice video!

[@fnc_antaryami]

what chemical is that

[@mouneshamounesha5348]

👌 sir.put the procedure for making silver Sir