Harmful bacteria present in water supplies are eliminated through the _____________ method?
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Answer: A. Sterilisation
Explanation
Sterilization is defined as the complete destruction or elimination of all microbial life. Potable water supplies must be completely free from pathogenic bacteria to prevent severe disease. This rigorous microbiological standard ensures absolute safety for all human consumption purposes. Waterborne pathogens include various bacteria, viruses, and protozoan parasites dangerous to humans. Public health engineering focuses on multi barrier approaches to ensure safe drinking water distribution. Microbial control standards are strictly regulated by environmental protection agencies worldwide.
Emergency water treatment kits often rely on rigorous sterilization to treat unsafe sources. Industrial pharmaceutical manufacturing requires ultra pure water treated to strict sterilization levels. Preventing waterborne disease outbreaks depends entirely on effective microbial elimination technologies. Aeration primarily removes dissolved gases and volatile compounds rather than killing bacteria. Disinfection reduces pathogen numbers to safe levels but may not eliminate every single microorganism. Option D is incorrect because a valid primary sterilization method is indeed listed above.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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