OPSC OAS 2019 PrelimsScience & TechnologyQuestion 6
Solved previous year question from the OPSC OAS/OCS 2019 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
Which is NOT correct for detergents?
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Answer & Explanation
Correct answer: (C) Cannot be used in acidic medium
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Detergents do have all properties of soaps, can be used in both soft and hard water, and are often made from vegetable oils (as non-ionic detergents)
- Unlike soaps, detergents can be used in acidic mediums, as they are salts of strong acids and do not precipitate in acid
