Aquaregia is used to dissolve noble metals. Aquaregia is

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1 part of conc. HNO3+3 parts of conc. HCl

1 part of conc. HNO3+1 part of conc. HCl

3 parts of conc. HNO3+1 part of conc. HCl

1 part of conc. HNO3+1 part of conc. H2SO4

answer is A.

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Detailed Solution

Aquaregia is 3 parts of conc. HCl and 1 part of conc. HNO3.It forms NOCl which liberates nascent chlorine;Nascent chlorine is responsible for the dissolution of Au and Pt.

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