The Air Quality Index (AQI) is a system used by government agencies to inform the public about the level of air pollution and associated health risks. The Environmental Protection Agency (EPA) in the US uses a colour-coded scale to represent different levels of health concern: - Good (0-50) - Moderate (51-100) - Unhealthy for sensitive groups (101-150) - Unhealthy (151-200) - Very Unhealthy (201-300) - Hazardous (301-500)
Match AQI range with levels of health concern in EPA colour scale and select the correct answer using the codes given below : AQI range | Levels of Health Concern ------- | -------- a. 0 to 50 | 1. Good b. 51 to 100 | 2. Unhealthy c. 101 to 150 | 3. Moderate d. 151 to 200 | 4. Unhealthy for sensitive groups Codes : [A] a b c d 2 4 1 3 [B] a b c d 1 2 3 4 [C] a b c d 4 3 2 1 [D] a b c d 1 3 4 2
Asked in APPSCCE 2020 Prelims 2020 · Topic: Pollution (Air Pollution: Types, sources, primary & secondary pollutants, smog, acid rain, effects, control technologies & policies.)
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