Aqua regia is a mixture of conc.HNO3 and conc.HCl in the ratio .
A
1:3
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B
3:1
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C
2:3
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Solution
The correct option is A 1:3 Aqua regia is a mixture of conc.HNO3 and conc.HCl in the ratio 1:3. Aqua regia dissolves noble metals like gold, platinum, etc and is hence used in metallurgical processes.