Which of the following acid is the constituent of eyewash?

Correct option is B

The correct answer is (B) Boric acid.

Explanation

Boric acid (H₃BO₃) is commonly used as an antiseptic in eyewash solutions due to its mild antibacterial and antifungal properties. It helps cleanse the eyes, relieve irritation, and prevent infections. Boric acid is a weak acid with antiseptic properties, making it safe for external use in diluted form. It is also found in contact lens solutions, medicated powders, and skin ointments.

Eyewash solutions containing boric acid are used to treat eye redness, minor infections, and irritation caused by dust, smoke, or pollutants. However, it should not be used in high concentrations, as excessive exposure can be harmful.

Information Booster

• Boric acid is a weak Lewis acid with mild antiseptic properties.
• It is commonly used in eye drops, antiseptic solutions, and skin creams.
• Boric acid solution helps treat conjunctivitis (pink eye) and eye irritations.
• It is also used as an insecticide, flame retardant, and in industrial applications.
• Excessive exposure to boric acid can lead to toxicity in humans.

Additional Knowledge

• Sulphuric acid (H₂SO₄): A strong acid used in battery acid, fertilizers, and industrial processes, but highly corrosive and not safe for eyewash.
• Boric acid (H₃BO₃): The correct answer, as it is a mild antiseptic used in eyewash solutions.
• Acetic acid (CH₃COOH): Found in vinegar, used as a food preservative and disinfectant but not for eye care.
• Hydrochloric acid (HCl): A strong acid present in gastric juices but too corrosive for medical use in eyes.