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  1. Aquaregia is a mixture of the following in the ratio 1 : 3 by volume

    2. A.

     Conc. HNO3 and conc. HCl
    B.

     Conc. HNO3 and conc. H2SO4
    C.

     Dil. HCl and dil. HNO3
    D.

     Conc. HCl and conc. HNO3

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    Answer : Option A

    Explanation :

    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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