A household uses water from a well that may be contaminated with feces. Which method makes a small quantity of the water safer for drinking?
Correct answer: A. Boil the water vigorously for at least one minute
- A. Boil the water vigorously for at least one minute
- B. Leave the water uncovered in direct sunlight for ten minutes
- C. Add a small amount of salt and stir the water
- D. Strain the water through a clean cotton cloth only
Explanation
Vigorous boiling for at least one minute kills most disease-causing bacteria, viruses and parasites in drinking water. Straining removes some particles but does not reliably destroy microorganisms, and sunlight or salt in the stated manner is not dependable treatment.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Environmental Health and Sanitation
Environmental health examines how water, air, food, housing, waste, noise, chemicals and workplace conditions affect disease and well-being. Sanitation content includes safe water treatment and storage, sewage and solid-waste disposal, food hygiene, vector control and the distinction between personal cleanliness and broader public-health sanitation.
Practise Environmental Health and Sanitation
50 free Environmental Health and Sanitation MCQs from Community Health Nursing, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Community Health Nursing questions like this
Community Health Nursing is on 9 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Environmental Health and Sanitation questions
A farm worker spills pesticide on the arms and clothing. The worker is conscious and breathing normally. What is the priority first-aid action?
Which example represents environmental sanitation rather than personal cleanliness?
Workers in a textile unit report ringing in the ears after each shift. Which preventive measure should the occupational health nurse emphasise?
Which feature is essential for a sanitary pit latrine in a rural community?
A village water source is surrounded by animal waste and muddy runoff after rain. Which environmental health measure should the community implement first?
Which method is most appropriate for disposing of ordinary household refuse in a community with regular municipal collection?