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JEE Main levelSingle correct optionDifficulty 2 of 3el253

The compound shown is used to preserve soft drinks. In the acidic drink, the species mainly responsible for the preservative action is

  1. APhenol
  2. BBenzoic acid
  3. CBenzaldehyde
  4. DSodium carbonate

Answer: B

The compound shown is sodium benzoate. In an acidic medium the benzoate ion is protonated to benzoic acid, the active antimicrobial form. No phenol, aldehyde or carbonate is formed.
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