Delhi's Air Quality Plummets: Understanding the Causes and Impacts

UPSC●SSC

Photo by Ahmer Kalam

त्वरित संशोधन

Delhi's air quality reached its worst level of the season.

The deteriorating air quality poses significant health risks to residents.

दृश्य सामग्री

Air Quality Index (AQI) in Major Indian Cities

This map shows the Air Quality Index (AQI) in major Indian cities, highlighting the severity of air pollution in Delhi compared to other urban areas. The color-coded markers indicate the AQI level, with red representing 'Severe' conditions.

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📍Delhi📍Mumbai📍Kolkata📍Chennai📍Lucknow

परीक्षा के दृष्टिकोण

Environmental governance and regulation

Public health implications of pollution

Sustainable urban development

Inter-state cooperation on environmental issues

विस्तृत सारांश देखें

सारांश

Delhi experienced its worst air quality day of the season, prompting concerns about public health and environmental management. This situation highlights the urgent need for effective pollution control measures and stricter enforcement of environmental regulations. The deteriorating air quality raises questions about the effectiveness of current strategies and the need for innovative solutions to combat pollution in urban areas.

पृष्ठभूमि

Air pollution in Delhi is a recurring problem, exacerbated by factors like vehicular emissions, industrial activity, construction, and stubble burning. Historical efforts to combat this include the introduction of CNG in public transport, implementation of emission standards (Bharat Stage norms), and various action plans.

नवीनतम घटनाक्रम

Delhi's air quality has recently plummeted to its worst levels this season, raising concerns about public health and the effectiveness of existing pollution control measures.

बहुविकल्पीय प्रश्न (MCQ)

1. Consider the following statements regarding the factors contributing to air pollution in Delhi: 1. Stubble burning in the neighboring states significantly contributes to particulate matter concentration. 2. Vehicular emissions, particularly from older vehicles, are a major source of pollutants. 3. Meteorological conditions, such as low wind speed and temperature inversion, exacerbate the problem. Which of the statements given above is/are correct?

A.1 and 2 only
B.2 and 3 only
C.1 and 3 only
D.1, 2 and 3

उत्तर देखें

सही उत्तर: D

All three statements are correct. Stubble burning, vehicular emissions, and unfavorable meteorological conditions all contribute to Delhi's air pollution.

2. Which of the following initiatives is NOT directly aimed at mitigating air pollution in the National Capital Region (NCR)?

A.Graded Response Action Plan (GRAP)
B.Bharat Stage VI emission norms
C.National Clean Air Programme (NCAP)
D.Atal Mission for Rejuvenation and Urban Transformation (AMRUT)

उत्तर देखें

सही उत्तर: D

AMRUT focuses on urban infrastructure development, while GRAP, Bharat Stage VI norms, and NCAP are directly related to air pollution control.

3. In the context of air quality management, what does the term 'PM2.5' refer to?

A.Particulate matter with a diameter of 2.5 micrometers or less
B.Percentage of methane contributing to greenhouse gases
C.Pollution measurement at 2.5 meters above ground level
D.Primary pollutants causing respiratory illnesses

उत्तर देखें

सही उत्तर: A

PM2.5 refers to particulate matter with a diameter of 2.5 micrometers or less, which is a significant air pollutant due to its ability to penetrate deep into the lungs.

4. Assertion (A): Deteriorating air quality in Delhi poses a significant threat to public health, leading to increased respiratory illnesses and cardiovascular diseases. Reason (R): Air pollution primarily affects only the elderly and individuals with pre-existing health conditions. In the context of the above statements, which of the following is correct?

A.Both A and R are true, and R is the correct explanation of A
B.Both A and R are true, but R is NOT the correct explanation of A
C.A is true, but R is false
D.A is false, but R is true

उत्तर देखें

सही उत्तर: C

Assertion A is true as air pollution has significant health impacts. However, Reason R is false as air pollution affects all age groups and not just the elderly or those with pre-existing conditions.