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      Question

      Ferrous compounds’, catechol and ascorbic acid are

      used in active packaging as: a.    Ethylene scavenger b.    Oxygen scavenger c.    Strength provide d.    Odour remover
      A Only A is correct Correct Answer Incorrect Answer
      B Only B is correct Correct Answer Incorrect Answer
      C Only D is correct Correct Answer Incorrect Answer
      D A & B are correct Correct Answer Incorrect Answer
      E C & D are correct Correct Answer Incorrect Answer

      Solution

      Catechol and ascorbic acid are used in active packaging as oxygen scavengers. 

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