Which acid is used in the purification of gold?

Nitric acid

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Sulphuric acid

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Sulphurous acid

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Ammonia

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Solution

The correct option is A
Nitric acid

Nitric acid is used in the purification of gold. The acid mixture aqua regia, or royal water, dissolves gold and is used to purify scrap alloy containing gold. Aqua regia is a mixture of hydrochloric acid and nitric acid in 1: 3 ratio.

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Similar questions

In using sulphuric acid to prepare other acids, as mentioned above, which property of sulphuric acid is used?

Name two other acids other than sulphuric acid, which can be prepared by using sulphuric acid.

Other acids cannot be used to prepare sulphuric acid due to the volatile nature of sulphuric acid

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