The maximum permissible chloride content in water for domestic supplies should not exceed -

অন্যান্য অন্যান্য 05 Oct, 2018

প্রশ্ন The maximum permissible chloride content in water for domestic supplies should not exceed -

  • ক.
    250 ppm
  • খ.
    350 ppm
  • গ.
    450 ppm
  • ঘ.
    550 ppm

সঠিক উত্তর

250 ppm

মন্তব্য

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