Question

With reference to aqua regia, choose the correct option(s)
A. The yellow colour of aqua regia is due to the presence of NOCl and Cl_
B. Aqua regia is prepared by mixing conc. HCl and conc. HNO_ in 3 : 1 (v/v) ratio
C. Reaction of gold with aqua regia produces an anion having Au in +3 oxidation state
D. Reaction of gold with aqua regia produces NO_ in the absence of air

Answer 1

Answer:

may be it's C

hope it helps you

Answer 2

Answer:

it at be c

Explanation:

With reference to aqua regia, choose the correct option(s)

A. The yellow colour of aqua regia is due to the presence of NOCl and Cl_

B. Aqua regia is prepared by mixing conc. HCl and conc. HNO_ in 3 : 1 (v/v) ratio

C. Reaction of gold with aqua regia produces an anion having Au in +3 oxidation state

D. Reaction of gold with aqua regia produces NO_ in the absence of air