Question

what is Aqua regia name two special metals which are insoluble in common Regent but dissolved in Aqua regia

Answer 1

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.

Answer 2

Aqua Regia, commonly called royal water, is a mixture of hydrochloric acid and nitric acid
two metals which are insoluble in common reagents but dissolved in Aqua regia are GOLD and PLATINUM