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Pollution: Sewage as Cause MCQ App Download & PDF e-Book - 1311

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MCQ: 1311

Hydrogen sulfide (H2S) and ammonia (NH3) are produced from

  1. the chimneys of factories
  2. use of chlorofluorocarbon in foam packaging
  3. decomposition of organic compounds by anaerobic bacteria
  4. treatment of acidic wastes with alkalis

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Pollution Sewage as Cause MCQ App (iOS & Android)

Pollution Sewage as Cause MCQ App

Pollution Sewage as Cause MCQ App (Android & iOS)

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