d and f block elements

Section: Chemistry

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Question : 7 of 24

Marks: +1, -0

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

[JEE Adv 2019 P2]

Reaction of gold with aqua regia produces NO2 in the absence of air
Reaction of gold with aqua regia produces an anion having Au in +3 oxidation state
Aqua regia is prepared by mixing conc. HCl and conc. HNO3 in 3 : 1 (v/v) ratio
The yellow colour of aqua regia is due to the presence of NOCl and Cl2

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