JEE Main Chemistry question

Chemistry Environmental Chemistry JEE Main

Not in JEE Main or NEET syllabus

How many of the following compounds can be categorized as primary air pollutants? SO_3, H_2O_2, NO_2, H_2SO_4, N_2O, CO, SO_2, HNO_3, CO_2, NO

Answer: 4

Solution

, , and are emitted directly from combustion sources and are classified as primary air pollutants, while , , ,

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Question ID VK-142100