Q. Sodium nitrite is reacted with to form , water and . Gold is dissolved in aqua-regia to form water, and and are respectively

 2666  201 AP EAMCETAP EAMCET 2019 Report Error

Solution:

Sodium nitrite is reacted with to form , water and gas Gold is dissolved in aqua-regia to form water, and

NO gas. Thus, here is and is . Reactions involved are as follows :