Question

The solution used by goldsmith for cleaning by goldsmith for cleaning tarnished jewellery is a mixture of two acids X and Y
in the ratio 1:3, X and Y are:
(A) Conc. H2SO4 and Conc. HCI
(C) Conc. HNO3 and Conc. HCI
(B) Conc. H2SO4 and Conc. HNO3
(D) None of these​

Answer 1

Answer:

HNO3 and Conc.HCL

Explanation:

Because 'Aqua Regia ' , A mixture of HNO3 and Conc.HCL in the ration 1:3 is used by goldsmith to dissolve and tarnish jewellery.

So X = HNO3

    Y = Conc. HCL

Answer 2

Answer:the Sol. Used are known as aquaregia and it contain conc.Hcl and conc.Hno3 in the ratio of 3:1

Explanation: