How Pollutants Form in the Atmosphere?

Added: 2026-05-16

[00:00:00]Did you know that while some pollutants are added directly in the air, some form in the air itself? Primary pollutants are those which are emitted directly into the atmosphere. These pollutants, they come from industries such as the sulfur dioxide, or they come from vehicles such as the nitrous oxide.

[00:00:14]However, when these chemicals are released in the air, they react with the moisture, they react with the sunlight, and they tend to form new pollutants.

[00:00:21]These are called secondary pollutants.

[00:00:23]One of the most harmful secondary pollutant is called bad ozone. This is formed when volatile organic compounds released from industries and cars react with the sunlight during daytime, and they form something called bad ozone.

[00:00:34]So, let's try and answer this question now. Which of the following is not a primary pollutant, or which is a secondary pollutant? We know the answer.

[00:00:41]The answer is ozone. I hope you like this content.

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