The composition of aqua-regia is

A

Dil.HCl

3

Conc. HNO3

1

B

Conc.HCl

3

Dil. HNO3

1

C

Conc.HCl

3

Conc.HNO3

1

D

Dil.HCl

3

Dil.HNO3

1

1
D
2
C
3
B
4
A

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