Question

what is aqua regia ? Name any two special metals which are insoluble in common reagent but dissolve in aqua regia?​

Answer 1

Answer:

Aqua regia, also called Royal water, is a mixture of hydrochloric acid and nitric acid in a molar ration of 3:1. It is called so because it can dissolve the noble metals like platinum and gold. So, the two special metals which are insoluble in common reagent but dissolve in Aqua regia can be Gold and platinum.

Explanation: