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Q. 'Royal water' is a highly corrosive and fuming liquid. It contains a mixture of which two acids?
Options:
A .  Hydrochloric acid and Sulphuric acid
B .  Sulphuric acid and Nitric acid
C .  Hydrochloric acid and Nitric acid
D .  Hydrofluoric acid and Nitric acid
Answer: Option C
:
C
Explanation:
Aqua regia ("regal water" or "Royal water ") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3. Aqua regia is a fuming liquid of yellow-orange (sometimes red), so called by alchemists because it can dissolve the noble metals, gold and platinum, but not all metals. Aqua Regia is called "Magic Water" or "King's Water," since they can remove gold and platinum from the magic metal.

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