Mark for Review Which of the following Is a primary air pollutant produced from burning coat? A Carbon monoxide B CFCs (chlorofluorocarbons) C PCBs (polychlorinated biphenyls) D Ozone E Sulfuric acid

## Step 1<br />The problem is asking us to identify the primary air pollutant produced from burning coal. The options provided are Carbon monoxide, CFCs (chlorofluorocarbons), PCBs (polychlorinated biphenyls), Ozone, and Sulfuric acid.<br /><br />## Step 2<br />We need to understand what each of these pollutants is and where they come from. <br /><br />## Step 3<br />Carbon monoxide is a colorless, odorless, and tasteless gas that is produced by the incomplete combustion of carbon-containing materials, such as coal. <br /><br />## Step 4<br />CFCs (chlorofluorocarbons) are not produced by burning coal. They are synthetic compounds that were once widely used in refrigeration and aerosol sprays. <br /><br />## Step 5<br />PCBs (polychlorinated biphenyls) are not produced by burning coal. They are a type of industrial chemical that was used in electrical equipment and other applications. <br /><br />## Step 6<br />Ozone is not a primary air pollutant produced by burning coal. It is a secondary pollutant that forms in the atmosphere when nitrogen oxides and volatile organic compounds react in sunlight. <br /><br />## Step 7<br />Sulfuric acid is not a primary air pollutant produced by burning coal. It is a secondary pollutant that forms in the atmosphere when sulfur dioxide reacts with water vapor. <br /><br />## Step 8<br />Based on the above information, the primary air pollutant produced from burning coal is Carbon monoxide.