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JEE Main levelSingle correct optionDifficulty 2 of 3nm127

The compound (groups para) is correctly named

  1. A4-formylphenol
  2. B4-hydroxybenzaldehyde
  3. C1-formyl-4-hydroxybenzene
  4. D4-hydroxybenzenol

Answer: B

Aldehyde ranks above alcohol in seniority, so the aldehyde defines the parent (benzaldehyde, CHO carbon = C-1) and -OH becomes the prefix hydroxy at C-4: 4-hydroxybenzaldehyde.
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