Which one of the following was used as one of the earliest antiseptic and disinfectants?
Correct answer: A. Phenol
- A. Phenol
- B. Ether
- C. Ethanol
- D. Methanol
Explanation
The antiseptic properties of phenol were used by Sir Joseph Lister (1827-1912).Phenol was one of the earliest disinfectants and antiseptics used in medical and surgical settings. It was first introduced by the British surgeon Joseph Lister in the 19th century as a means to prevent infection during surgeries. Lister recognized the antiseptic properties of phenol and began using it to clean wounds and surgical instruments.Ether (specifically diethyl ether) is a volatile organic compound that has been historically used as an anesthetic. Its function is to induce general anesthesia, causing loss of consciousness and a lack of pain sensation during surgical procedures.Ethanol, also known as ethyl alcohol has antimicrobial properties and is effective against a wide range of bacteria, viruses, and fungi.Methanol has various industrial uses, such as a solvent or fuel, but it is not suitable for direct use on the skin or as a disinfectant due to its toxic effects.
This question appeared on the UHS MDCAT 2015 paper, which you can sit online with every answer explained.
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About Phenols
Phenols contain a hydroxyl group directly bonded to an aromatic ring, making them more acidic than alcohols because the phenoxide ion is resonance-stabilised. Reactions include ionisation with bases, electrophilic substitution, bromination, nitration and oxidation, with attention to the difference between phenols and aliphatic alcohols.
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