Aqua regia is a mixture of three parts of hydrochloric acid and one part of acid.
A
nitric
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B
sulphuric
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C
acetic
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D
citric
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Solution
The correct option is A nitric Aqua regia is a mixture of three parts of hydrochloric acid and one part of nitric acid. It is also called as royal water and is used for dissolving gold and platinum.