The establishment of 'green belts' in the prevention and control of air pollution is a method of:

RUHS, Jaipur, M.Sc Nursing Entrance Exam-2023

Community Health Nursing

Medium

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2023

Explanation

The establishment of 'green belts' between industrial and residential areas is a classic example of using dilution to control air pollution.
Green belts work by increasing the distance between the pollution source and the population, allowing pollutants to disperse and spread out over a wider area.
The vegetation within the green belt also helps by absorbing some pollutants and trapping particulate matter, further reducing the concentration of harmful substances in the air.
This method relies on the environment's natural self-cleaning capacity to reduce pollutant concentration to safer levels before they reach inhabited areas.

Option A: Containment involves preventing the escape of pollutants directly at the source, such as enclosing a process or filtering emissions. Green belts do not contain pollution at its origin; they manage it after it has been released.
Option B: Replacement involves substituting a polluting material or process with a cleaner one. Green belts do not replace the source of pollution.
Option C: Legislation refers to the laws, acts, and regulations created by governments to control pollution. While a law might mandate the creation of green belts, the green belt itself is a physical method of dilution, not the law itself.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Methods of Air Pollution Control as background academic context rather than a clinical decision trigger.
Air pollution is a major cause of respiratory diseases such as asthma, chronic bronchitis, and lung cancer. Nurses frequently care for patients suffering from the acute and chronic effects of poor air quality.
Community health nurses have a role in advocating for public health policies that improve environmental conditions, such as the creation of green belts in urban planning, to protect community health.
What if? If an industrial accident caused a sudden, massive release of a toxic gas, dilution via a green belt would be insufficient. The priority nursing action would shift to emergency response, including advising community evacuation (a form of separation) and treating acute exposures, rather than relying on long-term dilution strategies.

How to Approach the Question

First, identify the key concept in the question stem, which is the function of 'green belts' in pollution control.
Next, analyze the options provided, which are different categories of pollution control methods: Containment, Replacement, Legislation, and Dilution.
Define each term in your mind. Containment is trapping at the source. Replacement is swapping for a cleaner option. Legislation is law-making. Dilution is spreading out to reduce concentration.
Consider how a green belt works. It creates space for pollutants to spread out and get absorbed by trees.
Match this function to the definitions. The function of spreading out and reducing concentration directly corresponds to the principle of 'Dilution'.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart B (pp 233-449 of 464) p. 55-57