Discussion
Presence of E.coli in water is an indicator of ................ contamination.
Answer: A
E. coli indicates sewage contamination.
Escherichia coli lives in the intestines of humans and warm-blooded animals and is passed in their faeces. Finding it in water shows faecal contamination, usually from sewage, and so the likely presence of pathogens causing cholera, typhoid and dysentery.
Oil, pesticides and herbicides are chemical pollutants detected by chemical tests; a bacterium from the gut tells us nothing about them.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development