Which of the following is a disadvantage of burning polymers?

• A. Toxic Gases
• B. Clean Energy
• C. Reduced Mass
• D. Water Pollution

Answer: (A)

When polymers burn, the main concern is air pollution from toxic gases. Polymers are mostly carbon and hydrogen, but many also contain chlorine (as in PVC) or other elements. During combustion, especially if it’s incomplete, these elements form harmful gases. Hydrogen chloride released from chlorine-containing plastics is corrosive and harmful to health; carbon monoxide from incomplete burning is a poisonous gas that can be dangerous in enclosed spaces. Other emissions like sulfur dioxide or nitrogen oxides can arise from additives and impurities, contributing to smog, acid rain, and respiratory problems. So, even though burning polymer waste might seem to release energy and reduce mass, the release of toxic gases is the key drawback.