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MHT CET202120 Sep 2021Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which among the following is NOT the use of SO ₂ gas?

Options

  1. AAs a preservative
  2. BIn manufacture of H ₂ SO ₄
  3. CWith conc. H ₂ SO ₄ it forms oleum
  4. DAs an antichlor

Correct answer

C. With conc. H ₂ SO ₄ it forms oleum

Step-by-step solution

Sulfur dioxide has the chemical composition of SO ₂ and is also commonly referred to as sulfurous acid anhydride, sulfurous anhydride, or sulfur oxide. Uses of Sulphur Dioxide In the food industries, as a food preservative. It acts as a bleaching agent to remove the excess chlorine and as a disinfectant. In cold storage plant, it acts as a refrigerant. It is used as a reagent and a solvent in the laboratory. In the preparation of sulfuric acid, sulfur trioxide, and sulfites SO ₃ forms oleum with H ₂ SO ₄

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