Which acid is used in eye wash?

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RRB NTPC Exam 19 Jan 2021 click here to view all questions

Which acid is used in eye wash?

ANitric Acid

BBoric Acid

COxalic acid

DNone of the above

Akhilesh ? Apr 16 '25 at 23:04

correct answer is: option b (Boric Acid)
Explanation: Boric acid is a very weak acid that is commonly used in eyewash solutions due to its mild antiseptic and buffering properties. It helps to maintain a pH level that is close to that of natural tears, making it safe and comfortable for use in the eyes. Other acids are too harsh and would damage the delicate tissues of the eye.

• Option a: Nitric acid is a strong acid that is highly corrosive and would cause severe damage to the eyes.
• Option c: Oxalic acid is a toxic acid and would be harmful to the eyes.
• Option d: While it might seem like "none of the above" could be correct if one is unsure, boric acid is indeed used in eyewash.

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correct answer is: option b (Boric Acid) Explanation: Boric acid is a very weak acid that is commonly used in eyewash solutions due to its mild antiseptic and buffering properties. It helps to maintain a pH level that is close to that of natural tears, making it safe and comfortable for use in the eyes. Other acids are too harsh and would damage the delicate tissues of the eye. Option a: Nitric acid is a strong acid that is highly corrosive and would cause severe damage to the eyes. Option c: Oxalic acid is a toxic acid and would be harmful to the eyes. Option d: While it might seem like "none of the above" could be correct if one is unsure, boric acid is indeed used in eyewash. Akhilesh ? answered Apr 16 '25 at 23:04

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