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#57362 Bangla Language & Literature General Level 0

বাংলাদেশের পানিতে প্রতি লিটারে কতটুকু আর্সেনিক অনুমোদনযোগ্য?

  1. A 0.01 mg
  2. B 0.05 mg
  3. C 0.1 mg
  4. D 0.5 mg
Answer: B - 0.05 mg

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