🧪 Rationale: The Most Powerful Disinfectant 🧪

Disinfectants are chemical substances used to destroy harmful microorganisms.

They are used in hospitals, operating theaters, for cleaning floors, equipment, and for infection control.

The question is – Which of the following is the most powerful disinfectant?

✅ Correct Answer: (c) Phenol

Phenol is considered one of the most powerful disinfectants.

It effectively destroys:

• Bacteria
• Viruses
• Fungi

and is widely used for cleaning surfaces in hospitals.

Why are the other options incorrect?

(a) Dettol → It is a good antiseptic, but not as powerful as phenol.

(b) Lysol → It is also a derivative of phenol, but pure phenol is more powerful.

(d) KMnO₄ → It is an oxidizing agent, but it is not considered the most powerful disinfectant.

✅ Exam Point:
Most powerful disinfectant →
➤ Phenol
(Medical-Surgical & Community Health Nursing)

📌 Disclaimer: This material is for nursing exam preparation. For clinical use, please refer to standard textbooks.

💚 Exam Objective Nursing – Asha D
Concept clarity • Exam confidence • Nursing success