Vikas TU
Last Activity: 8 Years ago
valuable metals, for example, unadulterated gold and platinum-amass metals don't respond with nitric corrosive, . Be that as it may, some less honorable metals, for example, Ag,Cu display in some gold combinations can be effortlessly oxidized and broken up by nitric corrosive, prompting shading changes of the gold-composite surface. Nitric corrosive is utilized as a part of gem dealers to spot low quality gold compounds and survey the gold virtue.