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1. শিল্পক্ষেত্রে  NH3 থেকে HNO3 তৈরির পদ্ধতিকে বলা হয়:

  • A. Solvay Process
  • B. Solvay Process
  • C. Solvay Process
  • D. Solvay Process

Answer: Option C

Explanation:

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