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1. শিল্পক্ষেত্রে SO2 থেকে H2SO4 তৈরির পদ্ধতিকে বলে-

  • A. Solvay process
  • B. Solvay process
  • C. Solvay process
  • D. Solvay process

Answer: Option D

Explanation:

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