NEET BIOLOGY

Detailed explanation-1: -The gaseous criteria air pollutants of primary concern in urban settings include sulfur dioxide, nitrogen dioxide, and carbon monoxide; these are emitted directly into the air from fossil fuels such as fuel oil, gasoline, and natural gas that are burned in power plants, automobiles, and other combustion sources.

Detailed explanation-2: -Final answer: The contamination of air by adding gases, smoke, and ash is called Pollutants.

Detailed explanation-3: -These six pollutants are carbon monoxide, lead, nitrogen oxides, ground-level ozone, particle pollution (often referred to as particulate matter), and sulfur oxides.

Detailed explanation-4: -Smoke primarily consists of particles and can include other gaseous air pollutants, including nitrogen oxides, carbon monoxide, and hydrocarbons that may be toxic. Exposure to smoke can cause health effects and make existing health conditions worse.

Detailed explanation-5: -Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it’s also called smog.