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  9. Q86

OPSC OCS 2019 · Question 86 of 99

Which is not correct for detergents?

General Studies

  1. AHave all properties of soap
  2. Bcan be used in soft and hard waters
  3. Ccan not be used in an acidic mediumCorrect
  4. DGenerally obtained from vegetable oil

Answer: C. can not be used in an acidic medium

Explanation

Detergents can be used in hard water and acidic medium . While Soaps cannot be used in hard water or acidic solution as they precipitate out.

Source: OPSC OCS Prelims 2019 GS Paper-I; answers per hemunda.com unofficial key

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