Concentrated `HNO_3`, upon long standing, turns yellow-brown due to th – InterviewSolution

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1.	Concentrated `HNO_3`, upon long standing, turns yellow-brown due to the formation ofA. `NO`B. `NO_2`C. `N_2 O`D. `N_2 O_4`
Answer» Correct Answer - B `4 HNO_3 rarr 2 H_2 O + 4 NO_2 + O_2` `NO_2` remains dissolved in `HNO_3` colouring it yellow or even red at higher temperature.

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