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Question

What is the catalyst used for the oxidation of SO2 to SO3 in the lead chamber process for the manufacture of sulphuric acid? 
  1. Nitric acid
  2. Nitrous oxide
  3. Potassium iodide
  4. Dilute HCl


Solution

The correct option is B Nitrous oxide
Lead chamber process is used to manufacture sulphuric acid commerically. In this process NO is used as a catalyst.
SO2H2O (steam)−−−−−−−NO SO3

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