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#10222 Bangladesh Studies General Level 0

নিম্নোক্ত কোনটি দ্বারা ফেনল থেকে পিকরিক এসিড প্রস্তুত করা হয়?

  1. A ConcentratedHNO3
  2. B H2SO4,30°-100°C
  3. C HNO3.H2SO4
Answer: C - HNO3.H2SO4

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