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Chemistry miscellaneous
  1. Aquaregia is a mixture of the following in the ratio 1 : 3 by volume
    1. conc. HNO3 and conc. HCl
    2. conc. HNO3 and conc. H2SO4
    3. dil. HCl and dil. HNO3
    4. conc. HCl and conc. HNO3
Correct Option: C

Aqua regia or nitro-hydrochloric acid is a highly corrosive mixture of acids which is formed by freshly mixing concentrated Nitric acid (HNO3) and Hydrochloric acid (HCl), optimally in a volume ratio of 1:3. It is used in dissolving gold.


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