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  9. Q52

OPSC OCS 2024 · Question 52 of 99

Which of the followings is not a dye:

Science & Tech

  1. AAlizarin
  2. BFluorescein
  3. CPhenolphthalein
  4. DAnthranilic acidCorrect

Answer: D. Anthranilic acid

Explanation

Alizarin is a natural dye derived from madder roots. Fluorescein is a synthetic dye used in textiles and biological staining.

Source: OPSC OCS Prelims 2024 GS Paper-I; answers per StudyIQ unofficial key

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