Which of the following is known as Aqua Gold?
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Nitric Acid
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Sulphuric Acid
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Hydrochloric Acid
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Ammonia
A
Correct answer
Explanation
Nitric acid is sometimes referred to as 'Aqua Fortis' in historical and industrial contexts. The term 'Aqua Gold' appears to be a confusion between 'Aqua Fortis' (strong water - nitric acid) and 'Aqua Regia' (royal water - mixture of nitric and hydrochloric acids that can dissolve gold). Among the options, nitric acid is the closest match.