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JEE Main levelSingle correct optionDifficulty 2 of 3el127

Pickles are often covered with a layer of vegetable oil mainly because the oil

  1. Aexcludes air and moisture and thereby checks the growth of spoilage microorganisms
  2. Bacts as a sweetener
  3. Creleases sulphur dioxide into the pickle
  4. Dconverts the acid of the pickle into its salt

Answer: A

The oil film keeps air and water away from the pickle surface, preventing microbial growth. Vegetable oil neither sweetens nor generates SO2.
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