Aqua regia is a mixture of hydrochloric acid and nitric acid present in the ratio .
A
1:3
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B
3:1
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C
1:1
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D
1:2
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Solution
The correct option is B 3:1 Aqua regia is a mixture of hydrochloric acid and nitric acid present in the ratio 3:1, i.e. the volume of solution is 3 parts of hydrochloric acid and 1 part of nitric acid.