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Which of the following is a common source of nitric oxide in the atmosphere? 

Option: 1

Forest fires


Option: 2

Human activities, such as combustion of fossil fuels 


Option: 3

Volcanic eruptions

 


Option: 4

All of the above


Answers (1)

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Nitric oxide (NO) is a precursor to nitric acid \text{HNO}_3 and is a common source of nitric acid in the atmosphere. Nitric oxide can be produced by forest fires, lightning, and human activities such as combustion of fossil fuels. Volcanic eruptions can also release large amounts of nitric oxide into the atmosphere.

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Deependra Verma

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