All are measures of the Air Quality index, except?

NORCET 2 -2021 (Shift-2)

Community Health Nursing

Easy

Appeared in: NORCET 2 -2021 (Shift-2)

Explanation

PM5 is not a standard pollutant category used for calculating the Air Quality Index (AQI).
The AQI typically measures pollutants like PM10, PM2.5, SO2, NO2, CO, O3, NH3, and Lead (Pb).
While particulate matter is a key component, the standard size categories are 10 micrometers (PM10) and 2.5 micrometers (PM2.5), not 5 micrometers (PM5).

Option A: This is incorrect because PM10 (particulate matter with an aerodynamic diameter of 10 micrometers or less) is a primary pollutant measured for the AQI.
Option C: This is incorrect because Sulfur Dioxide (SO2) is a key gaseous pollutant that is a standard component of AQI calculations worldwide.
Option D: This is incorrect because Nitrogen Dioxide (NO2) is another important gaseous pollutant included in the list of parameters for AQI.

Visual 1: Infographic: A chart showing the 8 major pollutants measured for India's National Air Quality Index (AQI) along with their corresponding health impacts.
Visual 2: Diagram: A visual comparison of the relative sizes of PM10 and PM2.5 particles against the diameter of a human hair to illustrate why smaller particles are more dangerous.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Components of the Air Quality Index (AQI) as background academic context rather than a clinical decision trigger.
Nurses should be aware of the local AQI as poor air quality can significantly exacerbate respiratory conditions like asthma, COPD, and bronchitis in their patients.
Patient education is a key nursing role. Advising patients, especially vulnerable groups (children, elderly, those with respiratory or cardiac issues), to limit outdoor activities when the AQI is high is an important public health intervention.
What if? If a patient with severe asthma presents to the emergency department on a day with a 'Severe' AQI level (e.g., above 401), the nurse should anticipate a higher likelihood of an environmentally-triggered exacerbation and prioritize respiratory assessment, oxygen support, and bronchodilator therapy.

How to Approach the Question

First, identify the core concept of the question, which is about the components measured for the Air Quality Index (AQI).
Second, notice the negative keyword 'except'. This is a critical instruction, meaning you must find the option that is NOT a standard measure of AQI.
Third, recall the standard pollutants that are monitored for AQI. The main ones include Particulate Matter (PM10 and PM2.5), SO2, NO2, CO, and O3.
Fourth, evaluate each option against this list of standard pollutants.
You will recognize that PM10, SO2, and NO2 are all standard pollutants.
Finally, conclude that PM5 is not a standard classification for AQI, making it the correct answer as the exception.

Concept Tested & Keywords

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