Aqua regia is used for dissolving noble metals (Au, Pt, etc.).

Question:

The gas evolved in this process is :

  1. NO

  2. $\mathrm{N}_{2} \mathrm{O}_{5}$

  3.  $\mathrm{N}_{2}$

  4. $\mathrm{N}_{2} \mathrm{O}_{3}$

Correct Option: 1

Solution:

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