Which of the following acids is capable of dissolving gold?

Hydrochloric acid

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Nitric acid

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Sulfuric acid

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A combination of A and B

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A combination of A and C

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Solution

The correct option is C A combination of A and B
Aqua regia is a mixture of hydrochloric acid and nitric acid in the ration $3 : 1$ . It is a very strong acid and can dissolve any metals including noble metals like gold and silver.

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The correct combination is :

To make a mixture which can dissolve gold, nitric acid and hydrochloric acid are to be mixed in the ratio 3 : 1. With 12 milliliters of hydrochloric acid, how much nitric acid should be mixed?

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Which of the following acids is capable of dissolving gold?

The correct option is C A combination of A and BAqua regia is a mixture of hydrochloric acid and nitric acid in the ration 3:1. It is a very strong acid and can dissolve any metals including noble metals like gold and silver.

The correct option is C A combination of A and B
Aqua regia is a mixture of hydrochloric acid and nitric acid in the ration $3 : 1$ . It is a very strong acid and can dissolve any metals including noble metals like gold and silver.