Question

Aqua-regia is:

A
$$conc. HNO_3 +2\ conc. HCl$$
B
$$conc. HNO_3 +3\ conc. HCl$$
C
$$conc. HNO_3 +NO_2$$
D
$$conc. HNO_3 +2\ conc. H_2SO_4$$
Solution
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Correct option is B. $$conc. HNO_3 +3\ conc. HCl$$
Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) at a ratio of either 3:1 . It is a reddish-orange or yellowish-orange fuming liquid
Hence option (B) is correct.

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