Which of the following pairs is mismatched? a. sodium hypochlorite-chlorine b. formalin-formaldehyde c. iodophor-iodine d. phenolics-peracetic acid e. benzalkonium chloride-quaternary ammonium compound

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.

i'm assuming that the correct answer is indeed the first one/ "a"..