A preventive method that kills most bacteria in milk is:

Appeared in: UP NHM CHO 7 Sept 2022 (Shift-2)

Explanation

Pasteurization is a process that uses controlled heating to destroy pathogenic bacteria in milk.
It is specifically designed to kill harmful organisms like Mycobacterium tuberculosis, Salmonella, and Brucella, which can be transmitted through raw milk.
The process kills approximately 90-99% of bacteria, significantly reducing the risk of milk-borne diseases.
Unlike other options, pasteurization is an active bactericidal (bacteria-killing) process applied to the milk after collection.

Option B: Maintaining a clean dairy farm is a crucial step in preventing contamination at the source, but it does not actively kill bacteria that are already in the milk.
Option C: Animal inspection ensures the health of the dairy herd, preventing diseases from being passed into the milk supply. It is a source control measure, not a method for treating the milk.
Option D: Milk inspection involves testing milk for quality, safety, and bacterial count. It is a monitoring or diagnostic tool, not a process that kills bacteria.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Food safety and hygiene, specifically methods of milk pasteurization as background academic context rather than a clinical decision trigger.
Understanding pasteurization is vital for public health nursing. It is a primary preventive measure against serious milk-borne illnesses like tuberculosis, brucellosis, salmonellosis, and listeriosis.
Nurses often educate communities, especially pregnant women, new mothers, and caregivers of young children, about the importance of consuming only pasteurized milk and dairy products to prevent infections.
In the Indian context, promoting pasteurized milk is a key public health strategy to combat diseases like bovine tuberculosis, which can be transmitted to humans through raw milk.

How to Approach the Question

First, identify the core action in the question: 'kills most bacteria'.
Next, identify the subject: 'in milk'. The question is asking for a process that treats the milk itself.
Evaluate each option against this requirement:
Does a 'clean dairy farm' kill bacteria in the milk? No, it prevents them from getting in.
Does 'animal inspection' kill bacteria in the milk? No, it ensures the source animal is healthy.
Does 'milk inspection' kill bacteria? No, it just checks for them.

Concept Tested & Keywords

Concept Tested: Food safety and hygiene, specifically methods of milk pasteurization.
Stem keywords: preventive method, kills bacteria, milk
Lead-in keywords: is

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) p. 191-193

E6 Comprehensive Textbook of Community Health NursingShyamala D part 1 (pp 26-389 of 389) p. 223-225

Practise the full UP NHM CHO 7 Sept 2022 (Shift-2)

Attempt every question from this paper in a timed mock, then review the full solution for each one.