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At what concentration can the taste and smell of sulphur dioxide be detected?

December 29, 2021
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At what concentration can the taste and smell of sulphur dioxide be detected?

Q. At what concentration can the taste and smell of sulphur dioxide be detected?

  1. 1000-2000ppm
  2. 11-30ppm
  3. 500-700ppm
  4. 0.1-0.3ppm

Answer: 0.1-0.3ppm

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