A) \[1\text{ }HN{{O}_{3}}:2\text{ }HCl\]
B) \[\text{3 }HN{{O}_{3}}:1\,HCl\]
C) \[\text{2 }HN{{O}_{3}}:2\text{ }HCl\]
D) \[\text{2 }HN{{O}_{3}}:3\,HCl\]
E) \[\text{1 }HN{{O}_{3}}:3\,HCl\]
Correct Answer: E
Solution :
Aqua-regia \[=1%HN{{O}_{3}}+3%HCl\]
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