All the following are disinfectants to control bacterial growth except:

Explanation

**Tincture of iodine** (option A) is not typically used as a disinfectant to control bacterial growth. Tincture of iodine is more commonly used as an antiseptic for disinfecting skin or mucous membranes. It contains iodine dissolved in alcohol and is often used for wound care or as a preoperative skin disinfectant.The other options, **Mercuric Chloride** (Option C), **Potassium Permanganate** (Option B), and **Hydrogen Peroxide** (Option D), can be used as disinfectants to control bacterial growth in various settings. They are more commonly employed for this purpose.