Which statement about incineration byproducts is true?

Which statement about incineration byproducts is true?

• A. Produces air pollution and toxic ash that must be landfilled
• B. Eliminates all air pollutants
• C. Generates only non-toxic emissions
• D. Reduces the need to landfill any materials

Answer: (A)

The key idea here is that burning waste creates both gaseous emissions and solid residues, and those residues often require careful disposal. Even with modern pollution controls, incineration releases air pollutants into the atmosphere and leaves behind ash that can be toxic. The fly ash, in particular, can concentrate hazardous materials and typically must be treated as hazardous waste and landfilled or otherwise stabilized. So the statement that incineration produces air pollution and toxic ash that must be landfilled reflects what actually happens with incineration byproducts. It’s not true that all air pollutants are eliminated, nor that emissions are exclusively non-toxic, nor that all materials avoid landfilling—residues still need disposal.

The key idea here is that burning waste creates both gaseous emissions and solid residues, and those residues often require careful disposal. Even with modern pollution controls, incineration releases air pollutants into the atmosphere and leaves behind ash that can be toxic. The fly ash, in particular, can concentrate hazardous materials and typically must be treated as hazardous waste and landfilled or otherwise stabilized. So the statement that incineration produces air pollution and toxic ash that must be landfilled reflects what actually happens with incineration byproducts. It’s not true that all air pollutants are eliminated, nor that emissions are exclusively non-toxic, nor that all materials avoid landfilling—residues still need disposal.