Answer:
The mismatched pair is : D. phenolics-peracetic acid
Explanation:
A. sodium hypochlorite-chlorine: Correct pair
Sodium hypochlorite solution (NaOCl) is made from the reaction of chlorine and sodium hydroxide solution.
B. formalin-formaldehyde : Correct pair
The formalin solution is a 37% aqueous solution of formaldehyde.
C. iodophor-iodine : Correct pair
Iodophor, a combination of iodine and solubilizing agent. When diluted with water, iodophor releases free iodine.
D. phenolics-peracetic acid : wrong pair
Phenolics is a noun used for phenols, aromatic hydrocarbons with a hydroxyl group. Whereas, peracetic acid or peroxyacetic acid is an organic peroxide.
E. benzalkonium chloride-quaternary ammonium compound: Correct pair
Benzalkonium chloride is a quaternary ammonium organic salt, used as a cationic surfactant.
