Nitric acid is used for the preparation of aqua regia.

True

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False

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Solution

The correct option is A
True

Aqua regia is a mixture of concentrated nitric acid and concentrated hydrochloric acid in the ratio 1:3. It is used to dissolve noble metals like gold and platinum.

$H N O_{3} + 3 H C l \to 2 H_{2} O + N O C l + 2 [C I]$

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Similar questions

Question 21.
Which of the following is used for dissolution of gold ?
(a) Hydrochloric acid
(b) Sulphuric acid
(c) Nitric acid
(d) Aqua regia

(i) What is aqua-regia?
(ii) State the use of aqua-regia.
(iii) What is the function of HCl in preparation of aqua-regia?

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